What does temperature do to resistance? (44)

[@electrician247]

Yes James is back 🙌👏👏👏👏👏

[@JBE]

Hey Mark 🤟. Yeah I'm still here in the darkest corners of YT. Loving all the new content from people including yourself. The industry can only benefit from being discussed and highlighted in this blog,blog,cast way.

[@PSFElectrics]

Nice to see you back. Upload more videos regularly. Looking forward to the videos of you building the new shed.

[@JBE]

If it's worth watching I'll put it on here 👍

[@ghspaelectricalservices9296]

Nice to see you back

[@johnboyginger]

Nice to see you again. Always enjoy your vids.

[@yorkshireoz3583]

Welcome back JBE, missed your videos, hope you are well mate.

[@paulgilbert9156]

Nice to see you back J B

[@steveblue161]

Happy new year and its great to see you back on youtube :)

[@jamesnicholson1512]

Hellooooooo stranger great to see you back pal proper cheered me up Thanks kido 👍🏻

[@JBE]

Hellooooooooo James 👋

[@markrowland5393]

Very interesting video. Yes, please post the video of you building your new shed / workshop.

[@JBE]

It's not edited yet but I know I've got hours of boring footage to try and something!

[@normanhartill1424]

Great Experiment proving that the resistance of a conductor is proportional to: it's material' its length, it's Xsectional area and it's temperature.

[@garylatto4191]

Good to see you back mate 👍

[@RedaReda-uk9lm]

Hi Beck nice to see you back. I think It would be better if you heated the copper wire itself not the insulation.

[@supersparks9466]

Isn’t the copper get hot then?

[@alanisaac9114]

Welcome back James hopefully we will see some more videos from you

[@iancreese9310]

Great video, I was expecting the resistance to lower not go higher! Have missed your videos. Keep safe.

[@alanisaac9114]

Be good if you could put the video up of you building the shed as I’m looking to do one my self 👍👍

[@JBE]

I'm no expert, most of the footage is of me getting rained on and swearing!

[@JD-gi9pl]

Decent little vid that 👍

[@JBE]

Thank you 😊.

[@imark7777777]

Cool although this does lack the resistance in temperature with current flow so looking forward to more. Theoretically the resistance won't increase with a large load if the cable is Cooled it's the difference between overhead lines and buried conduit.

[@JBE]

There's more on the way now the new workshop is up and running.

[@Martin-uf4ut]

you should have used a tub of 70oc water for the hot test instead of the flame

[@Cablesmith]

And here’s me thinking the knob was behind the blow torch not on the back of it 😀 it’s kind of a catch 22 situation isn’t it, a bad connection, or high resistance joint will get warmer, and in turn, the resistance will get even higher causing it to heat up even more 😂 lovely stuff !

[@JBE]

Haha wait a minute....🤔.

[@mathman0101]

You should do it with a load attached to it see if you get a much faster runaway thermal effect than with no load and no current draw as in this case.

[@phillipgwynne6580]

Good to see you back and look forward to seeing she’d building videos, but are you going to still film typical electrical jobs when out and about? Because you can never have too many of them, especially as Dave Savery’s gone but quiet, DSS Dan and even Tom Nagy. Tip the balance back!

[@JBE]

Well Phillip, some KZbin sparks have been doing it a long time and I'm sure content along with various lockdowns are playing there part in regular channel uploads. There are other channels available putting out some great content from site. I'll be back at it as soon as I can. Cheers for watching.

[@no_short_circuit]

Where have you been! Welcome back though.

[@JBE]

I've been playing at being a builder!...roofer...ish 😆🤔😁

[@marine8258]

He,s alive 🤣

Welcome bEck.

[@JBE]

I see what you did there 👋

[@Baron9969]

It's good to see you back. I vote yes on the shed video, more work for you on the edit. This is a great experiment, great video. It was surprising that the relatively small amount of heat raised the resistance that much over 2 meters. IF anyone is interested in an explanation (plus a bit more) about low temperature superconductors have a peek here kzbin.info/www/bejne/iXjRhXyamqiVopI It's short and the real explanation is in the first minute. For JB, the LHC gets a mention.

[@derricksmiles6624]

Great video, questionable temp measurement on the hot test, pvc coating will not burn till around 80c. Could have left on the metal conduit and heated from inside the pipe for a more even spread

[@petertallowin6406]

Does the new shed have a Beck door? Sorry dude, it's late. It would be cool to know how much the copper expands/contracts when it is heated/cooled. Would the hotter/cooler the copper gets have more or less of an effect on the CSA? (even if microscopic increments) Cool video.

[@drivewasher]

Resistance can't drop to much in cold, as it's 0.02/0.03 ohms at 9 deg c surely it can only drop to zero ohms. On the other hand heating it can make it keep going up until the copper melts can't it?

[@HeathenGeek]

and what time do you call this? 🙂

[@JBE]

2021 ? 😁🤘

[@JLGadgetguy26]

Are you going to get Davo Savo and NBundy to do the electrics, that would be comedy gold (a bit like fools and horses meets dad's army !)

[@JBE]

The last time I was in a room with Nick and David it was a bit of an anti-climax.

[@JLGadgetguy26]

@@JBE funny that's just what Mrs.S says :))

[@JBE]

@@JLGadgetguy26 I was nominated for super spark of the universe! But it wasn't to be. I was happy to see Rick from EGTE win.

[@JLGadgetguy26]

@@JBE I enjoyed that video, especially the costs of pizza and beer 😂😂

[@jameswylie8628]

Hi JBE looked high and low for your contact details regarding work can't find you on the net ????.

[@JBE]

DM me on Twitter or Instagram. I try not to put too much personal information on the interweb 😬 there are dark forces out there!

[@AndyK.1]

-20. What sort of freezer do you have? A Vaccine storing freezer?

[@JBE]

Shh 😜

[@drpantastic1969]

Could you not of put it on a hob and in a freezer?

[@JBE]

Yes, the next experiment will be much more elaborate.

[@jurassicsparks5220]

Sorry, it’s not cold it’s fucking 38 degrees here in Aus. Let’s not forget that the hadron collider at CERN uses cryogenic chambers to cool it’s super magnets to 1 kelvin -271 degrees C or absolute Zero to lower the resistance of the super alloy, Around each filament there is a 0.0005 mm layer of high-purity copper. Based on physical measurements it is a Rutherford cable, 1.510 cm broad, the mid-thickness being 1.480 mm, tolerances are only a few micrometers. Copper is an insulation material between the filaments in the superconductive state, when the temperature is below -263C. When leaving the superconductive state, copper acts as a conductor transferring the electric current and the heat. Niobium-titanium is an superconducting alloy

[@JBE]

I was in Australia 10 years ago and remember the heat well especially in Cairns! I would hate 38 degrees 😟 I'm much more at home in 10 or 15 degrees. That's my personal comfort zone of temperature. As for superconducting properties, well the world will have to wait until either the Aliens turn up and show us something new. Or our ability to utilise a material that is cheap to use, readily available and offers as close to no resistance as possible! I can imagine resistance being a massive problem for them in the LHC? Out here in the day to day world we just want more economical power.

[@mathman0101]

He’s back.....gone too long JB. The most articulate KZbin electrician. JB does JW🤣 not surprising the temperature rise was much slower given you need to get through that insulation layer.

[@JBE]

I have a few other ideas but they'll have to wait for now while I finish this new shed.

[@AndyK.1]

So you don’t need a unit to do testing then 😂

[@JBE]

I've been planning this shed for 12 months. Started it in November 2020 and it's still not finished 😒 I just don't have the time. Too busy being a Husband, dad and playing with wires.