I'm installing 18KW 480V 3-phase heaters in a liquid chemical storage tank. The manufacturer's instructions say to GFP the circuit. These will 30 amp circuits.
Well the prospect of doing this has thrown one of my suppliers for a loop, and the other one is quoting a Square D method that utilizes a shunt trip breaker and a GFI module that triggers the breaker. I trust Square D to be top of the line, but not always the most economical option.
Does anyone have a manufacturer or method they could recommend to accomplish this?
