Do you have a brand preference of those 3 systems, and do you know if there is much advantage of getting the DVS Premium connect over the Climate control model? 2007 brick house.
@legacyelectrical13 күн бұрын
They all do the same thing really, it's basically just a fan and a filter box in the ceiling
@legacyelectrical13 күн бұрын
I use EVOAQ
@C_MKZXАй бұрын
I am thinking to getting the HRV system and also got the quote from them, but I'm quite concern because it get the fresh air from the attic. Recnetly I climbed into my house attic and placed my air quality monitor there-it showed worse air quality compared to my room, even my house is nearly new build. It make me feel quite concern.
@legacyelectrical20 күн бұрын
You can set this systems up to bring in fresh air from outside. Send me an email and I can find a local installer for you.
@LongtimerollingАй бұрын
Hey. good to see more NZ content on you tube.
@jemarty6662 ай бұрын
Modbox has half boxes the lock in, just like packout.
@dan23haslin254 ай бұрын
Hi Alex.. quick question.Can you gain the full benefit of having ducts outside of the thermal envelope [roof cavity] in DVS systems, as opposed to HRVs, which require ducts to be inside the thermal envelope?eg ..STIEBEL ELTRON or Zehnder Systems - thank you
@legacyelectrical2 ай бұрын
A lot of that depends on the climate you're in. In NZ the climate is not extreme enough for the benefits to outweigh the installation and running costs. These are essentially filtered fresh air systems, with heat from a roof space being a side benefit that some houses can enjoy if they have a roof that gets lots of sun.
@blackstumpdrilling5 ай бұрын
I recently upgraded a Weiss vent system , the original setup had a 200 ml line coming off the fan before going to the individual 150 ml room ductings …but I installed 150ml behind the fan. Will this reduced line affect the fan output or shall I change it back to 200 ml ? Cheers
@legacyelectrical4 ай бұрын
Using 150mm ducting is suitable for your system if it is properly installed and avoids sharp bends. Calculate your airflow requirements of 30 L/sec in the lounges and 15 L/sec in each bedroom. If total airflow is under 120 L/sec, you are well within the capacity of 150 mm ducting and fan pressure. Note that the filter is the highest pressure resistant in your system, affecting airflows more than ducting size.
@elvinmani6 ай бұрын
Is it a problem during winter when cold air is transferred into the house while trying to keep the house warm?
@legacyelectrical6 ай бұрын
The rate if the air flow is very low when it's cold outside. It can make the house a little cooler bit it's a worthwhile trade off.
@mikemartin38773 ай бұрын
Because the house will be drier the heating doesn't need to work at full capacity to heat the house. Most system will regulate the amount of air entering the rooms when the temp. drops
@KiwiMaker7 ай бұрын
Damm you fit so many things in that van. love the drawers with sliders ontop. No bars over the windows?
@legacyelectrical7 ай бұрын
The back window doesn't have any bars. The side windows do. Got a quote for over a 1000 to get bars for the back window so I didn't go ahead with it.
@francescaeldridge9 ай бұрын
BTW, good video - well explained and respectfully worded. If the family of the man who passed see it, I hope they find it validating. Like you say .... electricity is dangerous and the buck stops with the electrician to carry out correct procedures.
@legacyelectrical9 ай бұрын
Thanks for the comment. Yeah, I tried to keep it neutral and informative. It's someone's tragedies after all. I also think the electrician has suffered enough and doesn't need to be named. You should check out my loose neutral video.
@francescaeldridge9 ай бұрын
I'm a very fresh apprentice and found this death so sad and preventable. I've been shocked to hear some sparkies say it's very normal not to test, "no one does it", etc. I think this case truly highlights why we can't and shouldn't ever make assumptions.
@PaulG.x9 ай бұрын
Good luck trusting a non-electrical worker to have a clue around live conductors. I recall a tale I heard at an electrical worker safety refresher course of a home owner that wanted to reposition an electric range. He prepared the new cable path in the wall , connected the new cable to the mains , proceeded to pull the new cable through the wall and immediately became an exhuman.
@legacyelectrical9 ай бұрын
The building was just doing building work. This dangerous situation was created by the electrician.
@Lightrunnerr9 ай бұрын
Dang, don't skimp when hiring electricians.
@AlanTheBeast1009 ай бұрын
A nice thing in North American household wiring (and most if not all commercial) is the ground ("earth") has no sheath at all - it is bare copper. It is clearly not meant to be a live or return and only a fool would re-purpose it as a live/return*; further as it is exposed to potential faults anywhere and everywhere it is more likely to trip the breaker if it contacts an exposed live wire or part. Not sure I agree with the "Swiss Cheese" model in this context. That is more for situations like disease prevention. That said, work begins with a plan, and the plan must include the correct parts, circuit design and testing. For a retrofit, as you say, he should have checked out the existing wiring. The most dangerous home tool: ladder. *Yes : they're always generating new fools.
@PaulG.x9 ай бұрын
We used to use that type of cable
@legacyelectrical9 ай бұрын
The entire NZ safety regime is built on the idea that at least 2 faults must be present for danger to arise. I'm not sure what's to disagree with in that. Redundancy in safety reduces the chances of harm occurring.
@AlanTheBeast1009 ай бұрын
@@legacyelectrical I don't disagree with the 2 faults model, I disagree with applying the Swiss Cheese analogy for it as it's usually many levels beyond 2.
@legacyelectrical9 ай бұрын
@@AlanTheBeast100 I think it's a useful way to think about it. I talked about at least 3 layers.
@AlanTheBeast1009 ай бұрын
@@legacyelectrical Oki-dokey - not here to argue that fine point. Indeed I'd rather dissect specific things that prevent injury (and why/how they work) than focus on a word to describe the process. (Another thing that might have saved that fellow here: hot to ground is only 120V. Still nasty - but 1/2 the current for a given resistive path). Recently extended a circuit in my home garage. Recent code change here is that concrete floored area sockets must be on a GFCI'd circuit (RCD to you). Fortunately you can get sockets that provide GFCI and the function for all devices downstream of that socket.
@bhc18929 ай бұрын
Channel has potential but I couldn't get all the way through because of the repetition and slow pacing. Each detail of the story was separated by 2-3 minutes of pontificating about how important testing/safety is. Got it, came here for the story. I'll sub and give it another chance though.
@MrKyleA9 ай бұрын
ya i threw it on 2x playback
@legacyelectrical9 ай бұрын
check out my deadly fault video. I think I retitled it Loose neutral fault explained.
@bhc18929 ай бұрын
@@legacyelectrical I liked that video much better! I think if you start doing electrical accident reviews this channel could really take off. I binge watch the hell out that stuff for aviation, nuclear, industrial, cave diving... seems like it could work for electrical too.
@legacyelectrical9 ай бұрын
I binge watch those videos too. I have been thinking about that. Not sure how many accidents there are to cover or how easy it is to find info on them. My biggest problem is not having free time.
@dicekar9 ай бұрын
I have no apetite to cut corners. I have worked for a german oem industrial machine maker and i was told to do a great job and ignore anything else and i was encouraged to get it done right at any cost.
@HavokTheorem9 ай бұрын
I'm just a home gamer but I'd like to think I'd notice the entire metal shroud being live, but then again, it would probably be because I touched it. Good video btw. The keystrokes for the prompts were a bit loud :)
@legacyelectrical9 ай бұрын
Yeah, I'll try and find a quieter way. I was using an elgato pedal. You'd think being a lice streaming product that it would be designed to not be heard.
@forresta659 ай бұрын
never use a ground for hot. that is insane. It doesn't matter if it is going to be sleeved.
@legacyelectrical9 ай бұрын
It was standard practice 25 years ago in NZ and only became illegal here 15 years ago
@forresta659 ай бұрын
@@legacyelectrical that is extremely scary. I would be checking every time I opened a bix
@legacyelectrical9 ай бұрын
@@forresta65 yeah, it's nuts. And sparkies even defend the way they used to do it... "they were doing the best with what they had at the time and it was fine because they tested their work".
@francescaeldridge9 ай бұрын
So agree! Makes no sense at all.....
@whatacoolguy40949 ай бұрын
Hi Alex, would you do a video about tiny home? I have seen many different ways of installation , also curious about earthing the metal sheet walls.
@legacyelectrical9 ай бұрын
Yeah could do. You mean about the wiring we do for tiny houses?
@whatacoolguy40949 ай бұрын
@@legacyelectrical interested to know about earthing premade sandwich panel as I seen a few with nothing earthed and some only self tap screws bonded. Cheers
@legacyelectrical9 ай бұрын
@@whatacoolguy4094 We've only just started doing the sandwich panel ones. We earth the trailer/metal frame they sit on. I also do the metal framing with a self tapping screw but that's additional to the bolt. I'll try and do a video about one.
@JohnWilkinson-h5f9 ай бұрын
I would have sleeved a lot of green and black conductors over the years probably hundreds, nothing wrong with it if only competent electricians are going to work on the circuit. With many home owners doing their own wiring it is certainly a big issue now. If as you say any testing had been done this fault would have been picked up. The failure here was to assume that the green was an earth and not to test to find out for sure. I have found a lot of preexisting issues when testing my work. Good video.
@greedygringoprospecting694110 ай бұрын
got the large one not much cheaper here USA.
@legacyelectrical10 ай бұрын
Is there a bigger one than my one? I've been really liking this one.
@ivanblogs11 ай бұрын
My Australian system has the same setup for air-loss and overflow alarms. It's 240V and uses "commercially produced" PCBs (with zero protective coating!). Newer units include a transformer - maybe avoiding mains voltages eases installer requirements?
@legacyelectrical10 ай бұрын
The one in my video really strikes me as home made. I guess they'd didn't have 3 core cable back then, or at least it wasn't common, so maybe this was a manufacturervs solution and not a technician's solution.
@ivanblogs10 ай бұрын
@@legacyelectricalthat panel circuit looks absolutely DIY, but the panel does not (embossed text?). Maybe it was a replacement? Maybe home-brew ideas leaked into the factory, or factory ideas leaked into home-brew? No idea. But it is a neat trick. 2 different alarm signals over just 2 wires with just a couple of passive components.
@legacyelectrical10 ай бұрын
Yeah, it's really cool. Especially since it's so basic.
@mattheweveleigh635111 ай бұрын
Both are great bags but I prefer Klein…
@legacyelectrical11 ай бұрын
I'm preferring the Milwaukee one. It's got way more space than I need, but the organization is great and the extra space is handy.
@mattheweveleigh635111 ай бұрын
Is the quality in the Milwaukee good like Klein? I am looking at the 48 pocket Klein bag for my work, I do lots of climbing and carry heavy tools for my trade.
@legacyelectrical10 ай бұрын
Yeah, it's very robust
@AntonioClaudioMichael11 ай бұрын
Im impressed bosch sent you this tool being the Amount of subscribers you have i always get told i dont have enough subscribers and i have almost 2000 you not even at 400 subscribers yet and already got companies sending you tools for testing Nice job great testing
@legacyelectrical11 ай бұрын
Yeah, pretty cool. I don't know if my 25k views video impressed them. I think they were just doing a big promotion and I happened to find out and apply.
@AntonioClaudioMichael11 ай бұрын
@@legacyelectricala random promotion makes sense Because I have never been able to get any name brand Tool Manufacturer to send me tools for videos or Testing.. But you did a great job. I Been told by most Manufacturers they want to see 50k to 80k views per video and a minimum of 10k subscribers. Which is dumb because 90 percent of views on any channel is From Non subscribers. I have over a million views and that matters but Not in the way it should to these Manufacturers.. appreciate the conversation and reply.
@legacyelectrical11 ай бұрын
Yeah, they ran FB ads about this promotion so I applied. I should have applied to review the SDS drill too. Maybe there's just too many channels of your size asking this so the cost would be too big if they said yes to all of them. Might be worth it for the marketing anyway though.
@AntonioClaudioMichael11 ай бұрын
@@legacyelectrical aww that makes sense Very cool that Facebook application ads really do work.
@AntonioClaudioMichael11 ай бұрын
Check out the flex Turbo It will beat that Bosch butt all day long
@legacyelectrical11 ай бұрын
I don't know that brand at all. I've realised how much drill brands are a fashion or fad. It just depends what's popular in a region, not what's good value and quality. But honestly, all of these drills are so good that I think it's just a question of slightly better or worse.
@AntonioClaudioMichael11 ай бұрын
@@legacyelectricalthe Flex Turbo Drill is Not just a bit better Its a Ton Better then The Bosch it's a powerhouse if you think that Bosch is impressive then the Flex Will blow you away.
@christianrivera511 ай бұрын
Hilti got it beat now
@legacyelectrical11 ай бұрын
They're so good now that it's just a question of one being slightly better than another
@yorselrus199611 ай бұрын
I disagree
@DB-us6ke11 ай бұрын
Hare Krishna!
@jaydrains2247 Жыл бұрын
Plumber here, i just came to cut an electrician's wires thats in the way of my pipes. LoL.. clean up after yourselves
@legacyelectrical Жыл бұрын
😅
@Murder2osix Жыл бұрын
Almost half a grand for a tool backpack? Pros get work done right not own expensive tools. These work, Veto... 😂
@legacyelectrical Жыл бұрын
I bought it 2nd hand for way cheaper
@oculophilia918 Жыл бұрын
Plastic on the porch eh? Bugs are that bad?
@legacyelectrical Жыл бұрын
small, house, not allowed to enclose the deck, so we put in some bistro blinds. Mostly to stop wind and make it a bit warmer.
@tmuney08 Жыл бұрын
Great video man. I have a similar issue, not exact. Battery is holding a charge, 2 bars left when I click the button, power tools work with the battery. The battery just won’t charge. When I put it on charger nothing lights up. I tried jumping it but still nothing. Any idea?
@legacyelectrical Жыл бұрын
Have your tried testing it with a multimeter to see if one of the pins is different from a good battery?
@tmuney08 Жыл бұрын
So I opened the case and found 1 of the pins wasn’t alignment properly. I realigned it and it charged for a few minutes, and then back to the same problem. I’ve tried jumping it and it still won’t charge. I’m getting about 18v out of b+ and b-, and 10k out of b+ and th with the thermistor check. 2 lights show when I press the button. Tools still work as well. I’ve tried a 20v tool and a 60v tool. It just won’t charge.
@legacyelectrical Жыл бұрын
@@tmuney08sounds different from my fault. Mine would only run some tools such as a torch but wouldn't run power tools and wouldn't charge. Did the pin bend back maybe?
@hummingpylon Жыл бұрын
And that is why all residential properties should use either RCDs or RCBOs in case of an earth fault that could develop into ground fault.
@legacyelectrical Жыл бұрын
This property already has Rcds. RCDs don't protect you from this kind of fault. This is because the fault is before the rcd and any fault current doesn't create imbalance for the rcd tor detect.
@ador474 Жыл бұрын
If my RCD is not tripping but we have light what can be the problems
@legacyelectrical Жыл бұрын
If it's not tripping and you have light then what's wrong?
@DuaneTurner-dn9ic Жыл бұрын
Brilliant
@anthonyhitchings1051 Жыл бұрын
you kiwis must be an odd lot - here in the USA a Neutral is not meant to be carrying significant current
@legacyelectrical Жыл бұрын
I have no idea how that would work for a single phase installation. Are you thinking of 3 phases installations?
@ehinckleysmith Жыл бұрын
Just wow. Thank you sir, you just fixed my battery. Same exact problem
@legacyelectrical Жыл бұрын
Here I was thinking this was a rare fault and my video wouldn't help anyway. I ended up redoing it with chopped pieces of pvc electrical trunking. The silicone jn thr pc keeps shifting causing it to stop working again.
@billjovanov1587 Жыл бұрын
Thankyou for the video, just fixed my 6amp with a washer. @@legacyelectrical
@brianbyrne4443 Жыл бұрын
THANK CHRIST IN IRELANDS WE HAVE L,N,E& EARTH ROD COMBINATION WITH EARTH AND NEUTRAL BLOWS THE MCB / RCBO IT SAVES LIVES AND THE FIRST IS. E,B,A,D. SYSTEM IN ALLOF IRL
@rickthescrewballpeacekeepe7387 Жыл бұрын
Similar things happened in our place a few years ago, the lights went off for 10 seconds then came back on dimmer than usual, the heater fan also went slow, a call to the utility company was needed, my socket device was showing 170V slowly rising to 190V, about 3 hours later the whole place went off for 30 seconds before coming back on with full power (244V nominal), it was clearly a substation neutral fault. I live in the UK BTW.
@geraldelwood9660 Жыл бұрын
Hi, I was surprised to see that you link Earth and Neutral bars in the Consumer Units in N.Zealand. Here in the UK we have various earthing systems but this one we call a TNCS or PME. The diff. being the link between earth and N is in the Head at top of the incomer ie it's pre meter / consumer unit. In general there is no earth rod but that is likely to change in next revision of the Regs. We still have the danger of broken neutrals but they would need to be outside the property to cause this problem. It seems unnecessarily dangerous to link E&N in the CU. What is the Max Ze (earth rod only) allowed in NZ ?
@legacyelectrical Жыл бұрын
You're not allowed to do a TT (earth rod only) system here. The MEN link (main earth neutral link) in the switchboard board (consumer unit) makes sense to me. You can remove thr MEN link to do some kinds of testing for example.
@geraldelwood9660 Жыл бұрын
@@legacyelectrical If you're not allowed TT only, how did you fit EV chargers when they first came out and there was no Open N/E detector available. In UK we had to put them on a TT (No TN allowed) to avoid the risk of making the car live due to a broken PEN (Protective earth and neutral) . Putting the N/E link in the fuse box seems so much more dangerous coz you are adding at least 3 more opportunities to have a open neutral. 1/ Tails from the Head. 2/ Tails into the meter. 3/ Tails out of the meter 4/ Tails in and out of an Isolator. 5/ Tails into the main switch. 6/ Connection - Switch to the Neutral bar. All those risk points could be eliminated by linking them in the Head. At the end of the day; while the risk of electric shock is sever, more people die from fires caused by poor connections and arching than they do from shock. Keep up the good work in spreading the word. Also it's a good tip to check the main earth with clamp meter to look for diverted neutral current before merrily working on an installation.
@legacyelectrical Жыл бұрын
@@geraldelwood9660 If you loose the neutral to the installation all metal appliances will become live, not just your car. Why pick on the car as something that should be protected from this kind of fault? Yeah, measuring current in the main earth is a good move. When I do inspections I like to check that. In the UK do you guys run a separate earth conductor from outside of the property? I guess that would reduce the number of places that you can have a hot connection develop as the main earth doesn't have current running through it (orindarily), at least not enough to make a hot connection. Yeah, I think you're right, fires from loose connections are a bigger threat. I'm surprised how well this video has done. I'm glad it's useful and potentially life saving information.
@geraldelwood9660 Жыл бұрын
@@legacyelectrical I think the reasoning for no PME for EV chargers is that in the future there will be millions of cars, some of which will be plugged in while being washed by owner. Like this, there is a far lower resistance to earth than someone standing in dry shoes on a dry carpet on wooden floor .... Hence tragedy of lady with outside tap. I have felt for long time that it should be in building Regs that any outside tap must be supplied by at least a 30cm section of plastic pipe - eliminating any "earth" potential on the metal tap. We have 3 main earthing systems : TT; TNS; TNCS (PME) TNS has a supplier's earth - (the casing of the concentric incomer). The main earth is strapped to this and goes to an earth block, at which point the householder takes responsibility. (Max Ze 0.8) With a TNCS there are just the 2 conductors to the supplier's Head / Cut-out. The Main earth originates from the neutral in the Head and again goes to the main earth block. (Max Ze 0.35) We have to install an earth rod if the Ze is above the supplier's Max. Also if the property is a setup to isolate from the grid to tun in Island mode (prosumer).. In the latest Regs we are now advised to earth to the foundations in all cases as a back-up to PME supply. Due to increasing cases of open PEN (protective earth neutral) as our grid ages and falls apart 😀
@legacyelectrical Жыл бұрын
Ok, so TNCS sounds like what we have. There are only 2 wires coming in front the street (if its single phase). But unlike there, every house must have an earth rod. The wire coming from the earth rod is run into the earth bar and the bar is linked to the neutral bar. We don't have to test the earth resistance in the earth mass, just the wire thsy runs from it to the switchboard. I see what you mean. Washing a charging car definitely has extra risk. We just have RCD protection for all our chargers. It's hot written into law yet, but the guidelines are to install 6ma dc rcd protection. Best to follow the guidelines since if someone goes wrong and your name comes up, saying 'it wasn't law' won't sound good.
@kenbrown2808 Жыл бұрын
in the US, it gets even crazier with our center tapped single phase system. if the neutral drops out, the single phase circuits go off balance, and turn into a series circuit - so one instead of each phase being 120V to "ground", I've measured imbalances as large as 200V to "ground".
@legacyelectrical Жыл бұрын
How does single phase center tap work. Surely you can't earth the center taps off 3 different phases.
@kenbrown2808 Жыл бұрын
@@legacyelectrical they take one of the three phases, and feed a transformer with a center tapped secondary. then they connect the center tap to the earth reference. that gives us two phases at 120V to ground and 240V phase to phase. then we run our high load circuits at 240V and our general circuits at 120V. takes more copper than running all circuits at 240V, but we've always had a good supply of copper; and in exchange, if a person gets shocked, it's usually just an annoyance.
@legacyelectrical Жыл бұрын
But then how do you earth the 2 phase set up? I think I need see some diagrams. We wore out transformers in star and the center of the star is neutral and ground. What happens if another gpase gets a ground fault to the earth which is linked to a center tap of another phase?
@vilhelmstein2091 Жыл бұрын
Do they tend to tip over when you have them open?
@legacyelectrical Жыл бұрын
The Klein one has that issue. The milwaukee one doesn't.
@rickymeadows5176 Жыл бұрын
Great vid and explanation ! Also worthy of mention is the fact that conductors are constantly heating (expanding) & cooling (contracting) each time a switch is flipped on or off and the branch circuit slightly moves with the sudden in-rush of current when voltage is applied to that branch . Over time the slight deformation of conductors, due to those factors, can cause loosening between the conductor and its termination device. It's not always shoddy electrical work rather the simple laws of physics at play.
@legacyelectrical Жыл бұрын
Thanks. That's definitely worth noting. I think a big issue is the method of connection too. A lug and bolt connection wouldn't have this problem.
@alext8828 Жыл бұрын
Back in the day, electricians used to ground the system on water pipes. Not good. Electrolysis eats up the pipes and can cause a shock. Grounding rods are the preferred method.
@legacyelectrical Жыл бұрын
Yeah it's like the opposite of cathodic protection
@railgap Жыл бұрын
It's like you're mansplaining to men. Could you be more condescending?
@legacyelectrical Жыл бұрын
What, you think everyone already understands loose neutral faults?
@TheBrainlessSteel Жыл бұрын
Sorry.. but what idiot designed that system over there! GROUND SHOULD ALWAYS WORK (and trip a fuse/breaker or a ground fault protection)!!! HEEEEEEELP!!!
@legacyelectrical Жыл бұрын
What country are you in? What system of earthing do they use there?
@michaelcostello6991 Жыл бұрын
Do RCBO's protect agains this type of Neutral fault. From a quick sketch i do not think they are of any use here. Thanks for sharing great video
@legacyelectrical Жыл бұрын
Yes, they won't help here. I think I'll do a video on this.
@johnburns4017 Жыл бұрын
Covered it brilliantly here on U-tube, Search on: _Earthing systems, EV charging connection options and open PEN detection devices_
@johnburns4017 Жыл бұрын
Some EV chargers have solved this problem by monitoring voltage then switching out the earth to premises by a contactor. The same can be implemented for the whole house. A TT system eliminates this serious problem. But TT needs a foundation concrete earth rod (using the house foundations) or a soil earth rod (many rods around the house). A rod or coil of earthing wire can be set in concrete in say under the garden of a house. Then the TN-CS earth supplied by the supplier can be ignored - use your own. Of course RCD/RCBOs need to be on all circuits in a TT installation, and one _main_ whole house RCBO, as the French have.
@legacyelectrical Жыл бұрын
Yeah, the hole house RCD thing sounds smart. Are they 150ma or something? The trouble with a TT system is it can't relied on to trip an overload device under fault conditions. RCDs would work though.
@johnburns4017 Жыл бұрын
@@legacyelectrical The French have a DP 300ma and 500ma main RCBOs provided by the supplier. So it is the last line of attack after the local RCD/RCB devices. Search Utube: _EV CHARGER INSTALLATION PEN FAULT PROTECTION USING MATT:E Connection units_ This is re: EV charger combating the lost neutral problem in TN-CS earthing. Can be applied to the whole whole, if someone makes one. It uses a contactor to switch out the earth to system. As I wrote, a TT system with a _foundation concrete earth rod_ (using the house foundations) or a soil earth rod (many rods around the house), that can be retrofitted, will solve the problem. The accident with the girl in Australia was because the earth rod was not substantial enough. If the earth was connected to the house slab and its rebar - _foundation earthing_ - it would not have happened. It is all down to suppliers saving money on over/underground earth cables.
@johnburns4017 Жыл бұрын
@@legacyelectrical RCD/RCBOs are mandatory on TT systems in the UK.
@legacyelectrical Жыл бұрын
@johnburns4017 I'm in NZ, we're not allowed to do different systems
@johnburns4017 Жыл бұрын
@@legacyelectrical So you only hope is if some manufacturer does a whole house device working on the principles of the voltage monitoring EV charger.
@johnburns4017 Жыл бұрын
What device prevents metal parts being live?
@legacyelectrical Жыл бұрын
The only way to protect against this fault is to turn all the power off for the installation when it's detected. I think a good way to do that is to measure voltage and if it gets too low shut the the power off and get an electrician out.
@jmcbike Жыл бұрын
Good to know. It helped me to draw a circuit diagram to see why the loose neutral could cause the ground connections to become hot.