EXPLAINED - Tesla PowerWall2: Integration with 3-phase power

[@LudicrousFeed]

Thanks for watching! You can use my referral code to get 1,500 km / 1000 miles of free Supercharging on a new Tesla: ts.la/thomas7208 #roadsterdownunder TT

[@huutsch79]

We have smart meter but they work like a net meter but the calculation is based on the rate and not kWh that means you pay for example 34 cent for a kWh plus net usage but getting only 20 cent for a solar unit. I would be keen to have a power all In our 3 phase house but at the moment no installer is providing that service

[@arbee6484]

Thankyou. I got a quote on Tesla and SolarEdge and I knew Tesla was not 3 phase which I have. this explains it so well! Thankyou.

[@LudicrousFeed]

Pleasure

Many thanks for this informative video, I'm just about to get my Tesla PW2 battery and was struggling to understand how it ties in with a multi-phase system. We have a 2-phase system, but from my understanding it is treated the same as a 3-phase.

[@LudicrousFeed]

Glad it helped

[@ReubenO77]

Does anyone know if this is the same in New Zealand?

[@gregoryhussey6477]

NZ has per phase metering and not net metering across the phases so this doesn't work in terms of billing here - you would be exporting at export tariff... only NZ and Czech republic has this dubious set up. My question is can I install 3 x powerwalls (1 per phase) to over come this and also provide increased back up across all my phases?

[@LudicrousFeed]

Greg Hussey Thanks for the comment. Now that’s really interesting to know regarding NZ. I asked my Tesla Installer contact about your question: it looks like although it is electrically possible to install one PW2 per phase, Tesla does not support this and it will void your warranty. The max they can do without voiding your warranty is 3x PW2 on single phase. I guess we have to wait for either PW3 or an upgrade to the gateway (included with PW2).

[@SnowAndrews]

Greg, I hear that some USA utilities are trying (currently) to sneakily back out their earlier commitment to "reverasable-metres" & "NET Meatering", in favour of seperate metres for "Import" & "Export", which ends up costing the "End User" more, for being grid connected (Grid-tied), often exporting on one phase, while simultaniously IMPORTING, at the dearer rate, on another phase.

[@BAdventures]

Really helpful. Easy to understand presentation. Thumbs up 😎

[@LudicrousFeed]

B Adventures Travel Vlogs Thanks! Glad you enjoyed it :)

[@mkii9110]

can i put a power wall on each phase to achieve the 3 phase power output?

[@LudicrousFeed]

You can ... however just beware in a blackout, because the gateway is only single phase, only one phase (and therefore only one PW) will provide backup to the house

[@brianjones318]

Thanks for video, so where does a 7kw ev wall charger go

[@LudicrousFeed]

Pleasure. Install it somewhere close to your car’s charge port

[@gunapathi]

Hello there, the video is quite self explanatory. I have 2 Tesla Powerwall 2 and looking at installing a third one. Can they install one battery in each phase to backup the entire house? I have a 3 phase aircon, but the installer told they can’t backup that during blackout. I am fine with that. All I wanted to know if 3 batteries could sit on one phase each and back up the entire house minus the 3 phase aircon? Thanks.

[@LudicrousFeed]

Gunapathi Selvarajan Thanks for the question. With the Gateway2, you can install a PW2 on each phase. However, during a blackout, it will only be limited to one phase. The PW2 are AC coupled and thus cannot mimic a true 3-phase situation that would be 120 deg out of phase with each other. TT

[@ecomech7464]

this is correct info for oz very good info..... also all three phases charge the battery ..... but during grid out only one phase feeds house and also if that phase has a single phase solar on it it feeds battery during grid out ....... yer baby there is a god!!!!!!!!!

[@LudicrousFeed]

Thanks for watching!

[@dinesh83]

Great video Tom. I'm about to get my second solar system. It seems I have Gateway 1 and I have 3 phase to my home. From the research I've done it seems I might have to upgrade to Gateway 2 as the new solar system is with a 3 phase inverter and load is distributed to all phases. I'll see what my installer says...

[@ppha0244]

Hi Tom, this is a great video yet again. I really enjoy your chalkboard sessions. Would love to make suggestions for future videos: heat pump, underfloor hydronic heating, colour or your exterior, ventilation systems eg HRV or Ventis

[@Androcentus]

So in the situation you described (3 phase house), will the PW keep the inverter online (panels charge the PW during the outage)? In the case of 1 phase inverter and 3 phase inverter.

[@LudicrousFeed]

1-phase or microinverter yes: Solar will continue to charge the battery 3-phase inverter: No, Solar won’t charge the battery

[@follicle12]

Thanks for this vid very well explained … I’ve , today, just added a new array (we have two phases coming into our rural property - NSW) to the Phase the PW2 is NOT on … I can’t seem to find any details online at all that answers my question: can I attach my new array to the PW2 as well in order to charge it when the (new) array is generating excess capacity … The feed in rate is so abominable putting that juice into the battery just seems like the sensible thing to do …

[@markwilliamson9199]

Great video! Trying to find out if I could use a power wall 2 with my three phase house. Could also buy powerwall 3 which I think has 3 phase built it?? Also I have lights and fridges on more than one phase, can I power both in a blackout?

[@LudicrousFeed]

With PowerWall 2 you can only back up single phase so you’ll have to choose which one. You can use PW2 with a 3-phase home via net metering in Australia. I will release a video shortly on the new PW3 so stay tuned!

[@JJANGSS]

⁠@@LudicrousFeedIm also keen to watch new video for PW3

[@LudicrousFeed]

@@JJANGSS Australia Tesla Powerwall 3 Specifications | Three Phase Backup? kzbin.info/www/bejne/lafKcqWMnqafj7c

[@saberianamir]

How can we achieve this with a 3 phase solar inverter? Would 1 phase of the solar inverter charge and discharged from the PW and the other 2 would be consumed by house? To power 3 phase appliances (like Tesla charger), would all 3 come from the solar inverter including the PW?

[@LudicrousFeed]

Yes as described. Net metering in Australia takes care of situations like three phase appliances. The PowerWall will discharge back to the grid to balance any excess load required beyond that provided by your inverter.

[@trevorevans7101]

So are you saying that although my feed in tariff is one 4cents per kw and my grid usage is 30 - 40 cents per kw the Tesla power wall is getting me 1 for 1?

[@LudicrousFeed]

Through the magic of net metering yes

[@samhickman3813]

Is it possible to have 3 Powerwall a coverall all 3 phases? How do multi-Powerwall setups work? House I’m looking at has four of them so I’m trying to get a better understanding of the tech.

[@LudicrousFeed]

Sam H Thanks for the comment. As I mentioned in another comment, it is electrically possible to have one PW2 per phase but you may risk voiding your warranty. This is advice from my installer contact.

[@samhickman3813]

I think between your videos and the discussions on Whirlpool I have a pretty solid understanding. Thanks! I live in QLD and take delivery of my X next week so aside from the winter sun we have a similar set of problems. Thanks for the great videos!

[@LudicrousFeed]

Sam H I’m so glad that I’ve been able to help! A major reason why I started this channel was because of the lack of information out there on battery storage. Have fun with the X! I know you’ll love it.

[@SuperSiggiboy]

Ludicrous Feed it seems really sketchy to feed power to one phase in a blackout, if you have any three-phase loads, it could have some adverse effects

[@LudicrousFeed]

Siggen Thanks for your comment. You’re right, in a blackout you’d have to be wary of any 3-P loads - something to keep in mind if you’re considering PW2. I don’t personally have any appliances that require that kind of load. Thanks for watching :)

[@fabiotrezza9052]

Hi Tom! Thanks from Italy! Only a question! With a new law here in Italy we can install PV battery etc 100% financed but with the condition that the exceeded power generated can't be sell to provider! So how can I configure my battery on a 3 phase house? Thanks in advance!

[@LudicrousFeed]

Hey Fabio, thanks for your question. That’s a shame that you cannot export back to the grid if you have a battery. With my system, the battery covers one phase but because of our net metering, if power is required on another phase during normal operation, the battery will discharge the equivalent amount back to the grid to ‘net’ the amount used. Hope that makes sense

[@mariar-v7128]

It's the smart meter which nets out the pw export to the grid (on phase A) to cover other phases and the draw on those phases (eg phase B and C)

[@LudicrousFeed]

Maria R-V Thanks for your comment. That’s a good summary of how it works :) thanks for watching!

[@Coliteral]

Do you mean the smart meter from the network supplier ? Or the one inside the Tesla ?

[@btecpostmaster]

@@Coliteral the network supplyer

[@praveenmussolini64]

You told about blackout,will the battery charges from solar on a three phase house with three phase solar inverter and single phase Powerwall at daytime if there is a blackout

[@LudicrousFeed]

Hi Praveen, thanks for the question. As far as I'm aware, in the case of a blackout/grid failure, the solar panels will continue to charge the battery and power the house (on that single phase only). Hope that helps. TT

[@praveenmussolini64]

Will the single phase will generate 230V only but the three phase inverter needs 330V on all three phases to kick off .....then how it will work in grid failure......

[@taztaz79]

@@praveenmussolini64 i suppose that will not work. But ask Tesla to be sure

[@xiaowei1]

Thanks Tom, that was great. how would it work if you have 2 or 3 solar inverters each supplying a given phase? can they all charge the power wall with a similar method?

[@LudicrousFeed]

Yes technically you can but the PowerWall can only back up single phase so it would make sense to stack the batteries on the one phase

[@xiaowei1]

@@LudicrousFeed Wow, thanks for the reply to such an old video. i think you may have miss understood my post. If you have 2 solar systems on the roof, each connected to a different phase (lines 1 and 2), with the battery also hooked up to line 1. can line 2 also recharge the battery? for example, as you feed the grid on line 2, line 1 draws the same amount from the grid to feed the battery (whilst it is also being feed by line 1's solar panels). I hope that makes sense.

[@LudicrousFeed]

Ok I see what you’re asking. What you’re describing is exactly what I currently have set up at my place Phase 1: 5.4kW Enphase Micro inverters + PW battery Phase 2: 3kW string inverter Thanks to the beauty of net metering, on your Tesla or inverter app, it unites everything and it looks like you’ve got one big solar system charging the battery. Electrically, the Phase 1 solar system is the only array charging the battery. However, any excess Phase 2 solar that is exported will be returned on Phase 1 in equal balance without any extra cost to you. Hope that makes sense

[@xiaowei1]

@@LudicrousFeed that is exactly what i wanted to know. I have been searching the internet and youtube for this information for some time. I imagine there will be a limit phase 1 can pump power back into into the battery whilst it is also charging from grid 1, but at least I know know how this works. thanks again!

[@LudicrousFeed]

Max PowerWall 2 input is 5kW

[@HarryJMac]

I don't think that meters in the UK work like that. Each phase is metered separately so 1kW import on one phase and 1kW export on another you get paid for the kW you export and pay the utility for the kW you import.

[@SpalHome-vx6zc]

Old meters work this way. SMETS2 polyphase should vector sum thus net import/export

[@Elitedevelop]

All the Tesla info I can gather as well as speaking to them mentioned that the powerwall 2 don't export back to the grid. However when I use 3 phase appliance like ducted air cond or car charger drawing only 5 kw from the battery, the electric meter don't register any consumption from the grid at all. Where do you see info regarding PW2 sending power back to grid with the other 2 phases? Could it be that the gateway draw all the power from PW2 and then send it into the house on 3 phases? If that is the case, I wonder if I stack two PW2 on the same phase, would it supply up to 9 KW/H to a 3 phases air cond at work without drawing from the grid?

[@huutsch79]

That will only work if the they do the calculation based on the power. Here in NZ the buy back rate is different so even you feed back the same amount you need to pay. Also on a power outage the system will shut down

[@LudicrousFeed]

Yes please note this explanation only relates to my setup in Australia where we have the luxury of net metering

[@huutsch79]

@@LudicrousFeed also keep inmind that on a power outage your configuration will still shut down

[@LudicrousFeed]

I have "island mode" off grid capability so in the event of a power outage, my Powerwall would only support the phase that it is wired to. The micro inverters wired to that phase would feed the battery on that phase to power the house circuits on the same phase for critical appliances eg fridge - I've seen it in action several times during a blackout and it works very well 🏆👏

[@huutsch79]

@@LudicrousFeed yes but we have a main inverter that means if one phase is going down the whole system is down

[@김용광-d7o]

Can I find the HS code of Powerwalll2 AC model?

[@Aydo88]

Great video, I will verify that everything you said was correct!

[@LudicrousFeed]

Thanks for watching! :)

[@joshgrand799]

Billing is different depending on your location. The power company pays back at a fraction of what they charge in my area.

[@juanquevedo6388]

Can tesla battery can be charged from 208 volts grid?

[@deathab0ve]

This all makes perfect sense, but why does it only supply 1 phase? I read on a bit on three stage and understand the frequency is the same, but they offset it by 120degrees making it so all 3 run at separate. from what I understand about the Powerwall is it can take the place of any of these, but usually the kitchen for reasons you mentioned. I'm wondering if this has the ability to output 2 at once or must you actually own 3 of them to true be off the grid? From what I'm reading it seems you could, but I don't know if there are other obstacles other than legality in some places.

[@LudicrousFeed]

Hi Mike, thanks for watching and thanks for your comment. The PW2 can supply its own phase AND simultaneously export back to the grid to nett off the other 2 phases (which import from the grid). I have evidence of this on my Tesla app - whereby the microwave is running (on the PW2 phase) at the same time as my pool pump (on a separate phase). I suspect if you truly want to be technically off the grid, you'd need 3x PW2 - one for each phase or maybe wait for the PW3 which is rumoured to be true 3-phase. Hope that answers your question.

[@deathab0ve]

Yea, thanks.

[@brokenwheelranch]

Hello thanks for the explanation. One question - does the solar power go to the gateway as you have in your drawing or to the powerwall unit? Also can the powerwall two work with the powerwall 3 - if you wanted to have two powerwalls when it comes out. Thanks

[@LudicrousFeed]

On the Tesla app, the solar power is depicted as going to the PW. The gateway manages all this. I won’t know if the PW2 will be compatible with future batteries at this stage

[@grinblurnar]

Silly question... if u have an inductive cooktop, usually 3 phase. What happens to it if there’s a blackout. In this case it is down to a single phase during the blackout. Will it work (badly... weakly... will it not work at all... will it be damaged...

[@LudicrousFeed]

al edg I would say it would not work at all if it is wired to receive 3 phase. Happy to be corrected. TT

[@mitchonthego]

Legendary description, I would loved to see something similiar on how to choose a config for you home now that Powerwalls just dropped to $10 k + gateway + install. Small family on 3phase, do i get 1 powerwall and upgrade 5kw solar (14 yrs old) or do I get 3 powewalls, one for each phase?? (budget 30-35k for self sufficiency)

[@mitchonthego]

Just found your other vids

[@tlamsg]

Great video. Learnt a lot watching this!

[@LudicrousFeed]

Thank you!

[@zoltrix7779]

Great video, its still a cop out only having a single phase version however. Its basically a situation that development is mainly done in North Amercia where 3p power in residential and small commercial is basically zero unlike Australia/NZ and Europe. Your kitchen is backup phase? I think perhaps lighting and internet No. 1 priority, then fridges, and then kitchen GPOs, but not the oven. But this is why a three phase unit is better, you can simply choose yourself what high current loads you want to kick off, either automatically or not. Eg, storage HWS, Heat Pumps, ovens and EV chargers.

[@LudicrousFeed]

In a blackout I would drag the router to the kitchen

[@mondotv4216]

@@LudicrousFeedSo, I assume if you have three phase solar, you have no solar in a blackout to recharge the. Powerwall?

[@LudicrousFeed]

@@mondotv4216 Correct

[@dinesh83]

@@LudicrousFeed wouldn't you be able to put everything in your house to 1 phase other than HVAC \ Aircons \ Car charger. I was on a single phase and got 3 phase last year. Ever since 3 phase I was getting power to only portion of the house during a blackout. I didn't realise what has happened until I came across this video. My sparky unknowingly has spread the load randomly on all 3 phases. He Told me he was doing that and I didn't know any better then either. Since I managed to power everything in the house in 1 phase during a blackout, I'm now keen to see if I can put everything back to the 1 phase except for my reverse ducted Aircon and Car charger. I have Induction cooktop \ oven and heat pump. If I'm not using all 3 at the same time I think I will be fine.

[@dinesh83]

Also - thanks again. Great video... 2 thumbs up!

[@michaeldruce4536]

Hi and thanks for your. I did not know the powerwall worked like this, so its great you have shared. Thank you :-). From what I understand the Powerwall2 is AC coupled, not DC. Will the Powerwall3 if DC coupled fix this three phase feed issue? Could you please tell me who your installer was? Are you based in Sydney? I'm looking at installing a solar & battery system once the model 3 comes to Australia.

[@LudicrousFeed]

Hi Michael, thank you for watching and thank you for your comment - I'm glad you found this video informative. Yes, you are correct, the PW2 is AC coupled as the DC version was scratched by Tesla before the AC PW2 was released mid last year. Regardless of whether a future PW3 is AC or DC coupled, it will ultimately still require an inverter somewhere. An AC coupled unit will need an inverter to receive solar energy from the PV cells. A DC coupled unit will need an inverter to export to the house. So it comes down to whether Tesla chooses to have a 3-phase inverter (DC) or 3-phase AC coupling built into the PW3/gateway to export a genuine balanced 3-phase load to the house. Yes, I'm in Sydney. I can totally recommend Daniel and his team from QuadSol 0421 708 583 Very experienced and competent, Daniel will look after you and answer all your questions! Are you sure you can wait that long for a Model 3? Realistically, we're looking at late 2019 to early 2020. Check out one of my other vids: kzbin.info/www/bejne/eqnFomWJhdWInbM

[@Marcos-nb5tc]

Hhhh 2024 and powerwall 3 hasn't been released yet in Australia

[@barney5620]

Great video. In a grid failure situation will the panel still be able to supply energy to the house on the single phase or is the backup only from the battery? If it still is able to charge the battery and supply energy generated from panel, how is the 3 phase invertwr dealing with the problem of grid failure?

[@LudicrousFeed]

Madan Morris Thanks for the question. 3-P inverter won’t allow backup function as far as I’m aware. The gateway is single phase and will allow battery backup and solar usage/charging. TT

[@Nicholsp01]

@@barney5620 Great question and an important one when choosing the inverter. In a power outage, your 3 phase devices, INCLUDING A 3P INVERTER will not work (no solar ) but a single phase inverter on the Powerwall phase will work.

[@wisammahmood546]

Very well explained.

[@LudicrousFeed]

Thanks :)

[@looc2985]

Thanks for the vid. Do all 3 phases charge the battery or just the phase that is connected to the battery? I cannot seem to find this info anywhere.

[@LudicrousFeed]

looc2 Thanks for your question. The battery is only charged on the phase that it is connected to. Thanks for watching :)

[@brucemcelroy8611]

only 1 phase will charge the battery as only 1 phase is switched by the gateway . The other 2 phases are run to the gateway via 'meters' [current transformers] only to provide reference information to the system

[@peterverbogt3870]

Great vid! I didn't know the gateway is tracking all three phases and translating that back to one phase with the powerwall in it. I still have two questions. 1. For example your kitchen uses 1kw but also the other 2 phases 'use' 1kw. Can the PW send 1kw to your kitchen and 2kw back on the netwerk at the same time? 2. You want to buy another PW would you put it in the same phase as your other PW or in an other phase? With the last, can the gateway manager 1 PW or more the one, each on a different phase? What i heard the problem with 3 phase batteries is to be ballanced a 3 phase battery will always send the same amount of energy on the 3 phases. In general sends more energy to the network then to your house. That's why i think above is the better way to go. Greetings Peter

[@LudicrousFeed]

Thanks for your questions Peter 1. Yes, it can send 1kW to the house while simultaneously discharging 2kW back to the grid. Up to a max of 5kW at once. 2. If I bought another PW, I would add it to the same phase as the original battery because in a grid failure situation, it can only support one phase backup

[@peterverbogt3870]

Thank you that really helped me! Does it also work the other way around? Lets say you have a 3 phase pv system with a single phase battery. When the pv system is putting out 2kW on all 3 phases (so 6kW total. 2kW goes to the battery and 4 to the public net. Does the gateway then tell the battery to draw the extra 4kW from the public net to extra charge the battery?

[@LudicrousFeed]

@@peterverbogt3870 In Australia, if you have net metering available, then yes it occurs the way you describe ... up to a max of 5kW per PowerWall

[@btecpostmaster]

@@LudicrousFeed i would actually extend what you said there to 5kw per phase. feed in is capped at 5kw per phase billable and 10kw per phase electrically. if you exceed 5kw output the meter will cap it and not meter anything above that.

[@hughrattray9354]

Good video - thank you - the music was a distraction for me

[@LudicrousFeed]

Cheers, I don't use music anymore for that reason 😁

[@aaroncowper9010]

Brilliant, thanks mate

[@LudicrousFeed]

🙏🙂

[@twilinski1]

Sorry, the video has several mistakes. Generally is correct in balancing and how the movement of power is calculated. 1. there are NO 3 meters. There are 4 clamps connected to the gateway. They check directions and volume of electricity flow by cable. The Gateway contains a small box which is an actual meter. Clamps are just sensors and are located on each phase cable and on the solar cable (as the PW2 need to know how much power solar produce). The balancing explanation is perfectly correct. 2. If you have a blackout, all the phases are cut off. The phase connected to PW is also cut off from the grid; however, it is supported by power from PW. Even more: the gateway has sure the phase is cut off physically from the grid to not harm the person working to fix the blackout. If the grid is back, the gateway connects the phase with the grid. 3. Solar isn't connected to PW2. It is connected to the same phase as PW2 after the gateway. That allows the inverter still works after primary power is cut. I prefer setup as divided into phases by home, A/C and EV charger. PW2 is connected to the Home phase, which allows to not see a blackout at all - except when AC is on.

[@LudicrousFeed]

Thanks for the clarification

[@matthewbeasley7802]

Tom - THANKS!

[@LudicrousFeed]

🙏🙂

[@colinfan3820]

Hello, thanks for the video, I was just wondering is your solar system inverter 3 phase or 1 phase? As the battery will connect to the inverter as well right?

[@LudicrousFeed]

Colin Fan Thanks for your question. The PW2 comes with a Gateway which will help the solar system inverter interact with the battery (regardless of single or 3-P). Thanks for watching :)

[@markp8295]

Good information. Thank you.

[@RH-gx3nf]

Thanks for your views. However I disagree with some of your findings. The PW2 is listed to be able to put out 5kW continously and 7kW peak. But if look at the power wiring to hook up the PW, the plug limits the three leads (of which two are used, L1/L2 not the N, single phase setup according to Tesla) to 18A each. 18A * 230V = about 4kW, not 5kW. How come? Simply put; the PW is a 2 phase machine (30A), not a single phase. That is why there are L1/L2/N leads. Two phases (L1/L2) would mean around 8kW of power which is much more in line with its 7kW feature. I think the Tesla has limited non-US users to a single phase to harmonize the product (gateway/pw) for export purposes. This way there is no problem with all the regional rules. The downside is that we will never see 5kW backup power (I'm in NL). Have you ever tried to connect all three leads to the PW?

[@LudicrousFeed]

Interesting ... will have to look more into this 🤔

[@eluke100]

I think Tom's explation agrees with initial assessment of the 2 phases in the Powerwall 2. By implication Tom actually says that the are 2 phases. One phase is hose facing making it single face from the point of view of the home. The second battery phase is greed facing making it a single face source from the grid"s point of view. In this way the Powerwall 2 can power the home phase on which it backing up at the same time it can export

[@eluke100]

From understanding as above , this raises the "how is the Powerwall 2 hybrid inverter constructed". This is so because to me as a none electrician/electrical engineer, there has to be two inverters in the Powerwall 2 or the inverter has to do a fair amount of magic to juggle exporting on 2 pases at once or on some occasions charging from its tried facing phase and still able to power it's backed up phase. Unless if we say in the latter case the gateway chips in to assist the power home facing Powerwall 2 phase so that the power wall can just charge through its single phase inverter and not worry about exporting through its home facing phase.

[@RH-gx3nf]

@@eluke100 The Powerwall is not the one doing the import AND export. It's the gateway that does the math. So there is always only one flow either going in or going out. Interesting fact: In the US 2 phases means 230 volts (2 x about 110). With three phases 400 Volts are being generated (in the EU). So effectively connecting both phases of the powerwall will tell it that the leads are 180 degrees apart making it able to deal with two leads of 110 volts. Imagine what will happen if you put 230/240 on each of those two leads ... Not good.

[@eluke100]

@@RH-gx3nf thanks for the explanation, that makes life easier for my mind then. I can start to see why Tesla wants to restrict Powerwall 2 installs to Tesla roof. If it needs to unlock new functionality using the 2 Powerwall phases you mentioned above, then it's needs to lock it down to a proprietary standard.

[@james10739]

Pretty cool here in America we really only have 2 phases so at least half will still work instead of 1/3rd

[@ericdirnbeck3497]

In America we do not have 2 phases, we have split phase which means from the power poll you have 2 hot legs each at 120v with their sine waves 180 degrees offset so that taken together they provide 240v. Each individual leg is 120v relative to ground. Reading the Power Wall 2’s specs, it is compatible with split phase meaning it can stand between the power company and your entire house and therefore power all your loads, both 240v and each 120v leg in the event of a power outage.

[@huutsch79]

Wrong that would only work if the sell price is the same like the buyer price and this is not the case everywhere

[@d7mysterio7]

Thanks for that information. Perhaps you can help. Me figure this out. I intend to get 5 Powerwall to manage 6000 SQFT home, vehicles and home accessories. How would I compute the power management using your example? My hoke will have 2 breaker Amp system that equals 400 amps. Would love to have your feedback. Thanks a million. I'm one of your new subscribers.

[@LudicrousFeed]

Hi David, thanks for subscribing! I’m glad you’re enjoying our videos. I must disclose that I’m not an electrician so my comments are based on observation and real world experience only. I can only find examples of 2 PW’s joined together from the Tesla forums and it appears that max output is increased to 10kW (single is 5kW). From memory, you can stack up to 9 PW2 so I would think 5 PW2 is achievable. I’m sure you could balance the units across 3 phases in a 2-2-1 configuration so that you’re covered in the event of a total power failure. But please check with your installer. Presumably you also have an adequate number of solar panels to charge those units. You will be able to manage your PW2 usage using the Tesla app once they’re installed. Good luck!

[@keithgray5525]

great video!

[@LudicrousFeed]

Keith Gray Thanks!

[@phillq]

Very interesting!

[@LudicrousFeed]

Phillip Quinlan Thanks!

[@tinistone6764]

A.C.T. has per phase metering, so it won't work

[@serg3y]

For those interested in logging data from their Powerwall 2 and publishing to pvoutput.org here is a great guide: mikesgear.com/2017/12/07/monitoring-teslas-powerwall2-on-pvoutput-org/ And the forum that started it: forum.pvoutput.org/t/tesla-powerwall2-data-to-pvoutput/202/45

[@RubenKelevra]

How do a system would look like with 3 power walls? In Germany a one phase backup wouldn't be enough, it would essentially cut some rooms from power or some outlets since they are evenly spread on the phases. This would be a real bummer. Also there are laws which forbids to use one phase on one device more than 3.6 kW (IIRC). This would limit the power wall output essentially to 3.6 kW on two phases, which doesn't sound that much, if you consider 3 phase charging of an EV.

[@LudicrousFeed]

Thanks for the comment Ruben. My understanding is that Tesla would not approve that current configuration with regards to a PW2 for each phase. However, my sources tell me Tesla's next gateway will be 3-phase which is great news - I don't know when this will be but hopefully in the not-too-distant-future. Thanks for watching :)

[@foeke8740]

Waiting for PW3 then. Also live in Germany. Just once in my life living in the Netherlands I remember a blackout. 8 years in Germany and I just lost count. I want/need 30kWh to get arround a 2 day outage. Which is the max I think.

[@foeke8740]

O yeah, note that a EV (car) has quite an other energy demand than a household. Charging your powerwall in day time and emptying it during the night to charge your P100D, it will give you about 50km/33 miles If you don't use a single kW for your household.

[@massimomacucci7461]

This is not a proper solution. Independent of the metering strategy (if you are charged based on the algebraic sum of the power values on the three-phases, the billing argument holds, otherwise it does not), there is a more fundamental problem: for the proper operation of the grid the power on the three phases must be as balanced as possible (this is why one tries to distribute loads among the three phases in a balanced way), while this solution creates a strong undesired unbalance. Some power companies may program their meters in such a way as to disconnect (and rightly so) a customer that has un unbalance between phases beyond a given threshold. In addition, in the presence of a photovoltaic system, if it is three-phase the powerwall would store only the energy produced on a phase, while all the excess on the other phases would be sold to the power utility at the usually very low feed-in rate. Should the solar system be single phase, it would supply power only to 1/3 of the appliances in the house. The Tesla Powerwall was never designed for three-phase systems, but just for the residential US market (which is split-phase) and to try to use it in a three-phase system is just plain wrong. There are many correct solutions for three-phase systems, which work properly, without creating an unbalance (actually they can contribute to phase balancing), such as those based on DC storage connected to a three-phase hybrid inverter.

[@SpalHome-vx6zc]

Although at only 5kW per battery, very little quantities to bother ‘the grid’. With a diversity factor on LV networks, it is unlikely to be an issue in the vast majority of circumstances. However if you are charging a battery, a car & running full house load, and so are all your neighbours, then it would get interesting.

[@atomicdmt8763]

pretty hard to understand........still..............

[@LudicrousFeed]

👍

[@atomicdmt8763]

@@LudicrousFeed TESLA requires an 'isolation transformer' (in the US): Im having difficulty determining the best way for 240V output onto 120/208V 3phase......... phase controller?

[@stephenashley3546]

this is called 'Net Metering'. now (in late 2020) most Australia electrical supply providers no longer support this model. Remember Australia is not so friendly to solar and other greener electricity production.

[@LudicrousFeed]

Thanks Stephen

[@trevorevans7101]

Thank you for this. Please turn that crazy music off or down! 🙃

[@LudicrousFeed]

Pleasure! Can’t do much about the music now 😁

[@XLStudiosTallinn]

Sorry mate but this is not the way it works on the network providers I know about in the EU.

[@mrmichrom8553]

Which part? The feed in tariff?

[@PingJerry]

There's no such thing as 2-phase power.

[@LudicrousFeed]

PingJerry Thanks for your comment. The title of this video may have been misleading, I have since changed it. The video is actually about the Tesla PowerWall2 and how it interacts with a 3-phase system. I don’t make any reference to any alleged 2-phase at any point in the video. Thanks for contributing :)

[@brucemcelroy8611]

Yes a 2 phase supply can be run to share the load . As long as all appliances ect run on single phase voltage ,no 3 phase motors

[@brucemcelroy8611]

as said only 1 phase will be backed up

[@taztaz79]

Depends. My stove uses 2 phase. But is devided between 4 heating elements. So 2 per phase.

[@wphubert]

Typical Tesla, we know best. Get battery storage at half the cost of Tesla and install a 3 phase Inverter charger. Don’t lock yourself into a company that will be gone in a few years. Also note that your 3 legs shone real requires that a circuit is 2 of the 3 legs. So single phase is IE leg 1 and 2, 2 and 3 or 3 and 1

[@LudicrousFeed]

Thanks for the comment. Good tip re: 3 phase circuits - will remember that.

[@plutopops9932]

This is not correct

[@LudicrousFeed]

Which part?