I am working on a oven design for a customer and need help sizing a blower.
The purpose of this blower will be to recirculate the air within this 768 cubic foot oven 16 times per hour. I did the basic math of multipling the cubic feet by the times per hour divided by 60 minutes to come up...
When is it necessary to use a GFI with heat trace. If I am running 5 seperate zones of trace that are 20 feet long and are 10 watts per square foot is it necessary to put a GFI on each zone?