This is a excellent demonstration. I am an hvac contractor and just ran into this very problem at a house today. Previous electrician diagnosed it as a bad 120 volt evaporator cooler motor. He was wrong.
I'd love to see you use a length of coax (with or without a messenger attached to it) and have it carry the return to the transformer, so we could see if the whole thing goes up, or just the ends. I don't think any company I've contracted for have ever placed much importance on detecting unsafe conditions. They don't supply amp clamps, and I've never owned one in 18 years, just a FVD.
This is a excellent demonstration. I am an hvac contractor and just ran into this very problem at a house today. Previous electrician diagnosed it as a bad 120 volt evaporator cooler motor. He was wrong.
Thank you for the comment.
Yours is not the first time where the troubleshooter missed this type of problem.
O Sr. Tem a Freja 300 da Megger?
I'd love to see you use a length of coax (with or without a messenger attached to it) and have it carry the return to the transformer, so we could see if the whole thing goes up, or just the ends. I don't think any company I've contracted for have ever placed much importance on detecting unsafe conditions. They don't supply amp clamps, and I've never owned one in 18 years, just a FVD.
No, I do not