#6 Ground Wire? Spa wiring requirements

[BobRip]

I don't think you have that right

When all heaters are on the neutral current will be close to zero since the return current is through the other Heater and not the neutral.

 

[Tractor Seabee]

I don't think you have that right

I stand corrected, I looked at the diagram again. The connection to neutral is for the GF function. So, the max load will probably only be encountered when heating an initial fill of cold water.

Ron

 

[Rock knocker]

Originally Posted by Tractor Seabee
When the water is hot there will be time of unbalanced load across the 2 phases.

I missed that part also, two phases on a single phase system?:laughing::laughing::laughing: