Our busses have blockheaters and we have installed sub panels and Eaton GFCBconnected to long extension cords.
The cords will be unplugged and plugged in in between trips in wet and snowy conditions.
They trip often I was wondering if I swapout the GFCB with a GFEP equipment protection GFI would that be
in accordance witharticles426 and 427 in the NEC.