bonding
- Thread starter rjdad82
- Start date
- Status
- Location
- Illinois
- Occupation
- retired electrician
Re: bonding
Look at 250.148. If you splice in the box or install a device in the box, you must bond the EGC to the box. Where the conductors are pulled through the box without a splice or termination, you are not required to bond the EGC to the box.
Don
Look at 250.148. If you splice in the box or install a device in the box, you must bond the EGC to the box. Where the conductors are pulled through the box without a splice or termination, you are not required to bond the EGC to the box.
Don
izak
Senior Member
- Location
- Springfield, MO
Re: bonding
you ALWAYS have to bring a EGC to the device because the device must be able to remain grounded when you take it out of the box
artcle 406.3 (C)
you ALWAYS have to bring a EGC to the device because the device must be able to remain grounded when you take it out of the box
artcle 406.3 (C)
izak
Senior Member
- Location
- Springfield, MO
Re: bonding
oops
sorry physis
406.3 c refers to receptacles
switches are permitted to be grounded by means of metal screws to a metal box
oops
sorry physis
406.3 c refers to receptacles
switches are permitted to be grounded by means of metal screws to a metal box
- Location
- Massachusetts
Re: bonding
Check out 250.146(B)
Check out 250.146(B)
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: bonding
EMT is the EGC! and it is allowed to bond the box.
izak
Senior Member
- Location
- Springfield, MO
Re: bonding
in your opinion, does that supercede 406.3 that deals specifically with receptacles?
izak
Senior Member
- Location
- Springfield, MO
Re: bonding
i think what they are saying is IF you run an EGC IN the EMT, THEN you must bond it to the box when you splice or install a device..Originally posted by hurk27:
EMT is the EGC! and it is allowed to bond the box.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: bonding
And what code section would require this?
When 358.60 allows the EMT to be the EGC.
And if the box is already grounded by the EMT the NEC does not require it to be grounded a second time. Running a separate grounding conductor is above and beyond what the code requires and is a design issue which is not unenforceable. Even when an Isolated grounding conductor is ran it is allowed to run through all connecting box's with out connecting to any box's.
If you read 250.148 and look close at the wording you will notice the word "OR" Between each connection method that is allowed.
This is to only make sure that the grounding path is not interrupted.
Like I said before I do not see this as a requirement to bond a box again when it is already bonded by the EMT. Which was not what the originally post asked. It asked if you had to bond a J-box if EMT was used is it required to bond the box again?.
And what code section would require this?
When 358.60 allows the EMT to be the EGC.
And if the box is already grounded by the EMT the NEC does not require it to be grounded a second time. Running a separate grounding conductor is above and beyond what the code requires and is a design issue which is not unenforceable. Even when an Isolated grounding conductor is ran it is allowed to run through all connecting box's with out connecting to any box's.
If you read 250.148 and look close at the wording you will notice the word "OR" Between each connection method that is allowed.
This is only describing how to make a connection between more that one EGC. and or one EGC to a grounded box. Or to a non-grounded box that was fed by an non grounded race-way method I.E. PVC conduit, NM, FMC.
This is to only make sure that the grounding path is not interrupted.
Like I said before I do not see this as a requirement to bond a box again when it is already bonded by the EMT. Which was not what the originally post asked. It asked if you had to bond a J-box if EMT was used is it required to bond the box again?.
Re: bonding
Can`t say I agree with the NEC on this particular
instance, I believe that if you put a box in a run it should be bonded, even though it may be at the time only a pull box. Later on down the line it may get a run out of that particular box, but everything is pulled through. Now you have to remedy that, when if you had only installed the pigtail in the box. What is the big deal, wire nut, pigtail, and a little extra wire.
Have done alot of jobs that are speced that way, and its really not all that much more to deal with.EMT sscr couplings, connectors come loose or are not tightened enough or to much and the manufacturer, cause there`s alot of crap out there,ul listed or not just don`t get it.
Can`t say I agree with the NEC on this particular
instance, I believe that if you put a box in a run it should be bonded, even though it may be at the time only a pull box. Later on down the line it may get a run out of that particular box, but everything is pulled through. Now you have to remedy that, when if you had only installed the pigtail in the box. What is the big deal, wire nut, pigtail, and a little extra wire.
Have done alot of jobs that are speced that way, and its really not all that much more to deal with.EMT sscr couplings, connectors come loose or are not tightened enough or to much and the manufacturer, cause there`s alot of crap out there,ul listed or not just don`t get it.
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