I know I have some 12kW immersion heaters coming up for a job. I don't deal with these often, and I'm just trying to find a practical service factor for these at 480VAC.
I know pure resistive loads are a SF of 1. Do I use this value for OCPD sizing or is there a more practical value to use (like 0.9 or 0.8?)
I know pure resistive loads are a SF of 1. Do I use this value for OCPD sizing or is there a more practical value to use (like 0.9 or 0.8?)