Solving your grounding issue is great,... but you need to investigate the source of the voltage potential. Maybe a fault in electrical heating elements.
@@SmartFew So… Another electric vehicle!? 🤔 Serious question: Was that EV made in Ch ina? I’m only asking because there are numerous video’s of electric charger issues (not to mention the ev batteries horror’s). NB: Thanks for this video raising awareness of such issue’s. 🙂
What you have there is different earth potential. Just because you don’t have continuity between earth and the second copper dosnt mean the second bit is not earthed somewhere. If it had no earth connection it wouldn’t get current flow as it would have no return path back to the transformer. I would hazard a guess that the situation changed from when the shed was originally wired. You may have the Earth exported from the house to the shed and then someone has added something connected to the literal earth. The shed should have its own Earth rod or system and everything in there should be connected to that and bonded if it is connected to the literal Earth. Or at least that’s what I think but not being a sparky I would get a proper sparky to look at it. Now getting someone good thats the real skill.
Thank you! I am a "proper sparky" now, well apart from a bit of admin on the NVQ. I agree with your analysis overall, especially apart the return path. The solution for me will be appliance testing the boiler, and re-wiring the whole shed and consolidating to a single supply. There probably is a sneaky earth rod out there.
Car chargers often have their own earth rod due to risk of PD from local earth to car body when in charge for someone standing next to and touching car. So yes you could just be looking at the difference between two earths, but it seems strangely high to cause the pipe to get that hot. What kind of supply do you have? Have you measured earth leakage current on your supply incoming earth? And then there’s random things like PEN faults and imported earth problems. Have you got an earthing test kit for the MFT? Before you worry about rewiring I’d want to have a really good look and measure what’s going on with the supply and all the earthing.
@@speedbird300 my supply is complex, TN-C-S at origin but also earth rods for when in off-grid mode. No Earth test kit for my MFT, think I need to go up a model in the range for that.
