Tractor Seabee
Elite Member
- Joined
- Oct 5, 2011
- Messages
- 3,896
- Tractor
- Kubota BX25
I do not have the code book anymore, need to get one though.
I believe Article 110 deals with the appliance end not the receptacle it is plugged into.
I believe Article 630 deals with designing and installing welder dedicated circuits either hard wired or plugin. a plug in has to be ientified as "For Weledrs Only".
Lets get back on track. The OP is searching for advice on a circuit conductors, breaker, and receptacle for a welder in a residential or small shop enviornment. If he is planning that outlet dedicated to the welder he should consider using twist lock receptacle and plug. Otherwise if the outlet is 50A and the OEM specifies some other circuit breaker less than that to protect the welder; simple thing to change out the breaker, use the twist lock then identify the out as "welder only. Most plug-in welders I have seen/used have internal protection for the welder itself. That would satisfy both Article 110 and 630. I agree with a previous poster that using a 50A four conductor provides a universal situation for any appliance. Another dedicated solution is a safety switch with 2 hots and a ground identified as welder only also complies with the code. This all opinion not based on a through reserched code solution. There are a lot of cross references and exceptions to the NEC that make for complications. KISS.
Ron
I believe Article 110 deals with the appliance end not the receptacle it is plugged into.
I believe Article 630 deals with designing and installing welder dedicated circuits either hard wired or plugin. a plug in has to be ientified as "For Weledrs Only".
Lets get back on track. The OP is searching for advice on a circuit conductors, breaker, and receptacle for a welder in a residential or small shop enviornment. If he is planning that outlet dedicated to the welder he should consider using twist lock receptacle and plug. Otherwise if the outlet is 50A and the OEM specifies some other circuit breaker less than that to protect the welder; simple thing to change out the breaker, use the twist lock then identify the out as "welder only. Most plug-in welders I have seen/used have internal protection for the welder itself. That would satisfy both Article 110 and 630. I agree with a previous poster that using a 50A four conductor provides a universal situation for any appliance. Another dedicated solution is a safety switch with 2 hots and a ground identified as welder only also complies with the code. This all opinion not based on a through reserched code solution. There are a lot of cross references and exceptions to the NEC that make for complications. KISS.
Ron
