inspectored
Member
Today I inspected 12 heat pump units on a commercial job. I want to make sure the OCPD and Feeders are sized correctly. All units have supplemental resistance heaters built in. The nameplate data has max amps for the heat pump and a small percentage for backup heat. So, how do I calculate this? Do I add a 125% for the heating elements? Or ???? Any help would be appreciated. Thanks.