For a 120VAC running thru a metal plate must the 120VAC ground be bonded to the plate as a NEC requirement?

 

Depends on the application, but generally not if the 120vac is not earth referenced.
Any reason it cannot be??

 

For a 120VAC running thru a metal plate must the 120VAC ground be bonded to the plate as a NEC requirement?

generally not, if it is not considered to be part of electrical equipment.

 

generally not, if it is not considered to be part of electrical equipment.

Meaning: If it is part of the electrical system, then yes the plate must be bonded to the electrical ground per NEC requirements?

 

And any conductors must be covered under the correct insulation rating .

 

And any conductors must be covered under the correct insulation rating .

I assume the answer is yes. the plate must be bonded to the electrical ground per NEC requirements?

 

Just a heads up that you have two Canadians chatting US code. A 'plate with wires run through it' isnt a clause in the code. There are a number of instances where bonding is required, generally regarded as electrical equipment, and things that could become electrified. A plate with a wire through it on its own, fails to categorize it either way, without context. Do you have a picture maybe.

 

Just a heads up that you have two Canadians chatting US code. A 'plate with wires run through it' isnt a clause in the code. There are a number of instances where bonding is required, generally regarded as electrical equipment, and things that could become electrified. A plate with a wire through it on its own, fails to categorize it either way, without context. Do you have a picture maybe.

Remember the key statement is " "120VAC" running thru a metal plate" This is full context and applies to all applications and also is fully categorized. Is this enough information to answer the question? REF: For a 120VAC running thru a metal plate must the 120VAC ground be bonded to the plate as a NEC requirement?

 

Remember the key statement is " "120VAC" running thru a metal plate" This is full context and applies to all applications and also is fully categorized. Is this enough information to answer the question? REF: For a 120VAC running thru a metal plate must the 120VAC ground be bonded to the plate as a NEC requirement?

well there you go. I'd be interested in the answer when you find it

 

Wouldn't the metal plate be considered as a busbar? One of the days I'll have to dig through all those boxes from my office at work for my old codebook...

 

well there you go. I'd be interested in the answer when you find it

I won't have an answer until the the NFPA/NEC replies to me and I review with them. This needs to be fully backed up from them.

 

MaxHeadroom is the expert here, but if you ground the plate, how can it have 120 VAC on it? A diagram would be helpful in understanding your question.

 

I won't have an answer until the the NFPA/NEC replies to me and I review with them. This needs to be fully backed up from them.

I would think even they would need more details, at least more than has been posted so far!

 

MaxHeadroom is the expert here, but if you ground the plate, how can it have 120 VAC on it? A diagram would be helpful in understanding your question.

Correct, if the plate is bonded grounded then if 120vac is placed on the plate the short circuit current will open the circuit and the plate will not have a floating hot.

 

Just for safety and expediency, go ahead and earth ground the plate.
It will cover all bases and set your mind at rest!

 

Just for safety and expediency, go ahead and earth ground the plate.
It will cover all bases and set your mind at rest!

It has everything to do with the NEC, not my mind. Earth ground is a resistance ground and may not open a CB if a short occurs. Must have an direct wire bonded ground per the NEC.

 

This thread and all the related ones seem like problems looking for a place to fit.

If "120VAC running through a plate" means a cable running through a hole in a metal plate (as opposed to the plate acting as a buss bar as some have interpreted) then let's consider an extreme example...

If a cable runs through a wall with metal studs, do the studs have to be tied to ground? It's conceivable that a conductor could short to a stud AND a sheet rock screw in that stud be exposed if the wall is damaged AND a person walking by barefoot on a concrete floor touch the exposed sheet rock screw.....

 

This thread and all the related ones seem like problems looking for a place to fit.

Troll alert, this guy, 123ken123, will keep going until someone agrees with him or the mods step in.

 

This thread and all the related ones seem like problems looking for a place to fit.

If "120VAC running through a plate" means a cable running through a hole in a metal plate (as opposed to the plate acting as a buss bar as some have interpreted) then let's consider an extreme example...

If a cable runs through a wall with metal studs, do the studs have to be tied to ground? It's conceivable that a conductor could short to a stud AND a sheet rock screw in that stud be exposed if the wall is damaged AND a person walking by barefoot on a concrete floor touch the exposed sheet rock screw.....
[/QUOTE
Obviously you have not read article 500 of the NEC. Read it and your extreme does not apply. So far no one has read it yet and are very ignorant of it including you.

 

This thread and all the related ones seem like problems looking for a place to fit.

If "120VAC running through a plate" means a cable running through a hole in a metal plate (as opposed to the plate acting as a buss bar as some have interpreted) then let's consider an extreme example...

If a cable runs through a wall with metal studs, do the studs have to be tied to ground? It's conceivable that a conductor could short to a stud AND a sheet rock screw in that stud be exposed if the wall is damaged AND a person walking by barefoot on a concrete floor touch the exposed sheet rock screw.....

Does the NEC dictate the studs have to be grounded? Read article 500 of the NEC and reply.