kwired
Electron manager
- Location
- NE Nebraska
You didn't answer the question of whether you have GFPE or GFCI protection.
GFCI will trip with only ~5 mA of leakage. GFPE will need 30, 50 or even 100 mA leakage depending on which unit is used.
Heating mat problem
- Thread starter McLintock
- Start date
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GFCI will trip with only ~5 mA of leakage. GFPE will need 30, 50 or even 100 mA leakage depending on which unit is used.
If the circuit is consistently metering at 6.5A, perhaps there may be a problem with the GFPE breaker.
kwired
Electron manager
- Location
- NE Nebraska
Or an actual ground fault, capacitive leakage, etc. Damaged mat/cable causing leakage? Meg on low test volts if you have meter with that ability 125 or 250 instead of 500 or 1000.
Yep. I was just going through a process of elimination. It would be easy and cheap to temporarily swap out the GFPE with a standard breaker. As long as you're just doing it for diagnostic testing, taking proper precautions, and continuously monitoring the circuit, the risk of personal injury or property damage should be minimal.
kwired
Electron manager
- Location
- NE Nebraska
I guess you did say it was GFPE in the OP, sorry about that.
- Location
- Tennessee NEC:2017
- Occupation
- Semi-Retired Electrician
Thread over a year old. To continue the thread, go here............
Problem with Roof Top Heating Mat
208v single phase, roof mat de icing system, trips GFPE breaker instantly. Customer initially tried using GFCI breaker wich I thought absolutely had to be the problem, switched to a properly sized GFPE breaker and it still instantly trips. Remove the nuetral jumper or install regular breaker and...
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