tony_psuee
Senior Member
- Location
- PA/MD
I have a question regarding Article 424.22.C, overcurrent protection for subdivided heater loads. My company is looking at installing resistive heaters in cooling coils for defrost. Our product is not listed and in referencing the NEC if my heater load is greater than 48A it needs to be sub-divided, 424.22.B, and if we have a sub-divided load must provide the supplementary overcurrent protection, 424.22.C. Yet, none of our competitors provide the protection as a standard, only as an option. I have tried to get a justification and only get mumbling that ends with and that's the way it has always been done. Can anyone provide some direction on this section?
Thanks,
tony
Thanks,
tony