Dwelling Load calc for Lincoln Welder

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newservice

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I am sure this is something I should properly either know or be able to find in the code, but...:angel:
So the guy has a 150a panel in the house, with a welder recept in the garage, now he wants to put another outlet for a welder in the barn. Says won't be using both at once.
Are both outlets counted in the load calculation, or should I consider them non continuous?
Also the welder he's buying is a Lincoln thats rated 52A @ 230V **" includes a load being plugged into a convenience plug(provided on the welder) of 15A". Would you go with the nameplate of 52A which includes something being plugged into it, or derate it? He wants a subpanel in the garage so will have other outlets available.
thx all
 
There's not a welder I've ever seen that could ever be a continuous load. Look at article 630, you can actually under size the wires for a welder because the only run in short bursts.

I don't think that anything in the garage gets figured into a load calc.
 
Both welder outlets count in the load calc, but if you use the existing dwelling calc in 220.83 you would essentially only have to count 40% of their total, which is less than one of them. :cool:
 
Unless the guy is going to open a full time welding shop in there, I wouldn't even bother with load calculation for hobby welder.

Also, it only draws 52 amps when one is working with maximum welding current, that don't necessarily happen all that much, especially in a home garage setting. Try to weld light metals with that kind of current and you just blow holes in it.
 
Great stuff guys, thanks...
The 52A factory rating is with a 15A load operating out of the internally mounted receptacle too.
Next is to figure the voltage drop and feeder size, he tells me the barn outlet will be 300' from the service panel. :sick:
 
newservice said:
Great stuff guys, thanks...
The 52A factory rating is with a 15A load operating out of the internally mounted receptacle too.
Next is to figure the voltage drop and feeder size, he tells me the barn outlet will be 300' from the service panel. :sick:
Click to expand...

Thanks guys I can take it from here. Let you know what I come up with.
 
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