Often we get a request to connect a machine. A customer is usually adding or changing some industrial equipment. I have a picture of a nameplate from a recent request for example. Typically, if the machine doesn't have a main OCPD integrated into it, we would look at the nameplate, consider it ALL to be continuous load (who knows if it continuous), apply the 125% factor and select the conductor and OCPD accordingly.
Then I started thinking about 240.3 and providing OCPD for the equipment itself. Considering the nameplate I have attached is there a maximum OCPD for the equipment? Is it possible to oversize the OCPD from a protection to the equipment point of view? Do you agree just taking the nameplate by 125% provides a complaint install even if a little oversized?
I would say the nameplate in question is not an "appliance" or "industrial machine" per the NEC.
Then I started thinking about 240.3 and providing OCPD for the equipment itself. Considering the nameplate I have attached is there a maximum OCPD for the equipment? Is it possible to oversize the OCPD from a protection to the equipment point of view? Do you agree just taking the nameplate by 125% provides a complaint install even if a little oversized?
I would say the nameplate in question is not an "appliance" or "industrial machine" per the NEC.
