ARC-FAULT CALCS

[steve brandt]

Please help me understand what wire size and length to use in arc-fault calcs when the feeders vary between the transformer and the service equipment - this is typical in overhead feeders where the meter to masthead may be copper and the masthead to transformer may be aluminum - same thing happens with underground feeders where there is a hand hole at the bottom of the power pole and the meter to hand hole may be copper while the transformer to hand hole is aluminum
thanks

 

[tom baker]

You’ll need to update your occupation first. Then copy and paste into a new post from this one