I am wiring a welder and just have a few questions for the install. The welder will be wired 230v.,77 amps at 60% duty cycle.According to 630.11, the conductor size will be 77amps x .78(multiplication factor) and this will give me my conductor rating.For OCP, it can't be more than 200% the primary current(200% x 77).150amp OCP will be the max. Will the breaker serve as the OCP? If so, is the disconnect required to be fused or non-fused?
welder install
- Thread starter otm126
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james_mcquade
Senior Member
Re: welder install
is this is a typical buzzbox welder?
look at the nameplate on the welder itself. is should tell you the input current.
is this is a typical buzzbox welder?
look at the nameplate on the welder itself. is should tell you the input current.
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
Re: welder install
Requirements for a disconnecting means are in 630.13
If not part of the welder, then
a switch or CB rated not less than the overcurrent device.
Requirements for a disconnecting means are in 630.13
If not part of the welder, then
a switch or CB rated not less than the overcurrent device.
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