Please doublecheck my thoughts:
I need to install a circuit for a heat sealer with a nameplate rating of 35 amps. It is cord and plug connnected, currently equipped with a 30 amp twist lock plug on a length of 10/3 SOOW. I don't think it came from the factory with the cord on it. I'm considering this an "appliance", not fastened in place (it's on wheels). I've looked at 422.10(A), and determined that I need a circuit not less than 35 amps. 422.33(C) requires that the plug and receptacle shall not be less than 35 amps, as well as 210.21(B)1 which requires that the receptacle be rated not less than the branch circuit rating. This means I need to replace the 30 amp plug. So, I intend to use #8 copper, a 40 amp breaker, and a 50 amp plug/receptacle, as 40 amp plug/receptacles are generally not available. I think I also need to replace the #10 SOOW with #8. If it turns out that the appliance is in use for more than 3 hours, I would need a circuit rated at 43.75 amps, so I would need #6 copper and a 50 amp breaker. Or, do I need to comply with 422.11(E)(1) and use a maximum 35 amp circuit? Is the nameplate rating considered the same as "overcurrent protection rating"? The nameplate does not say "max OCPD" or anything like that. It just says "Amps - 35".
In it's previous location, the unit was connected to a 30 amp circuit for many years with no problems, but that doesn't make it right.
Thanks
I need to install a circuit for a heat sealer with a nameplate rating of 35 amps. It is cord and plug connnected, currently equipped with a 30 amp twist lock plug on a length of 10/3 SOOW. I don't think it came from the factory with the cord on it. I'm considering this an "appliance", not fastened in place (it's on wheels). I've looked at 422.10(A), and determined that I need a circuit not less than 35 amps. 422.33(C) requires that the plug and receptacle shall not be less than 35 amps, as well as 210.21(B)1 which requires that the receptacle be rated not less than the branch circuit rating. This means I need to replace the 30 amp plug. So, I intend to use #8 copper, a 40 amp breaker, and a 50 amp plug/receptacle, as 40 amp plug/receptacles are generally not available. I think I also need to replace the #10 SOOW with #8. If it turns out that the appliance is in use for more than 3 hours, I would need a circuit rated at 43.75 amps, so I would need #6 copper and a 50 amp breaker. Or, do I need to comply with 422.11(E)(1) and use a maximum 35 amp circuit? Is the nameplate rating considered the same as "overcurrent protection rating"? The nameplate does not say "max OCPD" or anything like that. It just says "Amps - 35".
In it's previous location, the unit was connected to a 30 amp circuit for many years with no problems, but that doesn't make it right.
Thanks
