disconnect requirements for portable welder
- Thread starter beaupaul
- Start date
- Status
- Location
- Massachusetts
Re: disconnect requirements for portable welder
I was going to say that the receptacle can serve as the disconnecting means then I read 630.13
2002 NEC
I was going to say that the receptacle can serve as the disconnecting means then I read 630.13
2002 NEC
It looks like you must provide a disconnect switch.
- Location
- Massachusetts
Re: disconnect requirements for portable welder
Looking at this more closely perhaps the welder in question has a built in switch that would satisfy the requirement.
It would have to disconnect all ungrounded conductors.
Looking at this more closely perhaps the welder in question has a built in switch that would satisfy the requirement.
It would have to disconnect all ungrounded conductors.
plugman
Member
- Location
- Milwaukee, WI
Re: disconnect requirements for portable welder
There is a device on the market that would serve as both a plug and receptacle and a switch rated disconnect and allow you to be code compliant. You would probably have to remove the factory installed plug and wire on these devices. See Meltric for more information.
There is a device on the market that would serve as both a plug and receptacle and a switch rated disconnect and allow you to be code compliant. You would probably have to remove the factory installed plug and wire on these devices. See Meltric for more information.
- Location
- Massachusetts
Re: disconnect requirements for portable welder
I still do not know if they would meet the requirement in this instance.
In this instance the requirement specifically states disconnect switch it does not say disconnect receptacle
That said other than the wording I am sure they would work fine.
Interesting name Plugman any chance you work for Meltric?
I have some Meltric plugs in my truck and I like them. I also know that they are rated for use as a disconnect.
I still do not know if they would meet the requirement in this instance.
In this instance the requirement specifically states disconnect switch it does not say disconnect receptacle
That said other than the wording I am sure they would work fine.
Interesting name Plugman any chance you work for Meltric?
plugman
Member
- Location
- Milwaukee, WI
Re: disconnect requirements for portable welder
Yes, the top of my paycheck says Meltric. I am a Product Engineer and I scan this site due to the fact that our devices are often used to make installations code compliant. Due to our ratings and the tests we have passed, UL considers our devices to have the same capabilites as disconnect switches. Our devices are described as motor and branch circuit disconnect switches on the UL label that is affixed to each device. I am very confident our product would comply in this application.
Yes, the top of my paycheck says Meltric. I am a Product Engineer and I scan this site due to the fact that our devices are often used to make installations code compliant. Due to our ratings and the tests we have passed, UL considers our devices to have the same capabilites as disconnect switches. Our devices are described as motor and branch circuit disconnect switches on the UL label that is affixed to each device. I am very confident our product would comply in this application.
- Location
- Mission Viejo, CA
- Occupation
- Professional Electrical Engineer
Re: disconnect requirements for portable welder
In my opinion this device is definitely a disconnect switch. Neither disconnect switch, disconnect nor switch are defined terms in the NEC; however, these devices clearly function as a disconnecting means as defined in Art 100 and as switches as defined in the NESC.
In fact, if they were Class I rated, I wouldn't have too much problem using them in classified locations per 501.4(A)(2) and 501.11.
Bob,
In my opinion this device is definitely a disconnect switch. Neither disconnect switch, disconnect nor switch are defined terms in the NEC; however, these devices clearly function as a disconnecting means as defined in Art 100 and as switches as defined in the NESC.
In fact, if they were Class I rated, I wouldn't have too much problem using them in classified locations per 501.4(A)(2) and 501.11.
- Location
- Massachusetts
Re: disconnect requirements for portable welder
Bob what you and plugman say makes great sense, and I knew that already.
What is hanging me up is the wording of that section.
Here are just a few of the 519 hits I got for disconnecting means in the 2002 NEC
225.31
230.70
240.40
422.30
422.32
422.33
424.19
426.50
427.55
430.101
440.11
440.63
445.18
455.8
460.8
517.72
525.21
527.4
I can not find any that are like 630.13 that specify that the disconnecting means shall be a switch or circuit breaker.
Why the difference for this section?
I agree the Meltrics would work, they are a good product.
I am just very curious about the wording in 630.13.
Bob
Bob what you and plugman say makes great sense, and I knew that already.
What is hanging me up is the wording of that section.
Here are just a few of the 519 hits I got for disconnecting means in the 2002 NEC
225.31
230.70
240.40
422.30
422.32
422.33
424.19
426.50
427.55
430.101
440.11
440.63
445.18
455.8
460.8
517.72
525.21
527.4
I can not find any that are like 630.13 that specify that the disconnecting means shall be a switch or circuit breaker.
Why the difference for this section?
I agree the Meltrics would work, they are a good product.
I am just very curious about the wording in 630.13.
Bob
Re: disconnect requirements for portable welder
Bob:
Does 630.13 say anything about the disconnecting means (i.e. switch or circuit breaker) having to be at the welder?
I would think the plug would work at the welder if there is a circuit breaker back at the panel.
Steve
Bob:
Does 630.13 say anything about the disconnecting means (i.e. switch or circuit breaker) having to be at the welder?
I would think the plug would work at the welder if there is a circuit breaker back at the panel.
Steve
Re: disconnect requirements for portable welder
I read this section a couple of more times. Now it sounds like the "switch or circuit breaker" is only required if the welder is not equipped with an integral disconnect.
In other words, an integral disconnect could be any type of disconnect (like a plug), but a disconnect that is not integral would have to be a switch or circuit breaker.
In my opinion, the fused disconnect is not required.
Steve
I read this section a couple of more times. Now it sounds like the "switch or circuit breaker" is only required if the welder is not equipped with an integral disconnect.
In other words, an integral disconnect could be any type of disconnect (like a plug), but a disconnect that is not integral would have to be a switch or circuit breaker.
In my opinion, the fused disconnect is not required.
Steve
jtester
Senior Member
- Location
- Las Cruces N.M.
Re: disconnect requirements for portable welder
I tend to agree with Steve that the circuit breaker at the panel can be considered the disconnect. 630.13 doesn't say where it must be located.
Jim T
I tend to agree with Steve that the circuit breaker at the panel can be considered the disconnect. 630.13 doesn't say where it must be located.
Jim T
- Status