bonding

Status
Not open for further replies.
E

eager2learn

Senior Member
Location
Mennifee,Ca
I have an inspection in a couple of days and this is the situation - I've added a ground rod to a new meter main service that I recently insatlled, bonded the rod to the propane(gas), aswell as the cold water, which in turn terminates at the new service in the panel - a continuos run of course - the bonding lugs are located inside the wall for the cold water hook-up, and the gas bonding lug is located outside the wall - My question is, does the lug inside the wall, which bonds the cold water system need to be accessible? - I have added a two gang extension ring to the wall where the lug is, just in case, so that when they stucco, it can still be reached - Where in the code can I find the proper installation requirements?
 
Re: bonding

bonded the rod to the propane(gas)
Click to expand...
Why? What is going to energize it?

I've added a ground rod to a new meter main service that I recently insatlled...

...the cold water, which in turn terminates at the new service in the panel...
Click to expand...
If you installed a true "Metermain", then your disconnect is outside. You grounding electrode conductors should go to the first means of disconnect, not to a panel after the first means of disconnect.

does the lug inside the wall, which bonds the cold water system need to be accessible? - I have added a two gang extension ring to the wall where the lug is, just in case, so that when they stucco, it can still be reached - Where in the code can I find the proper installation requirements?
Click to expand...
It needs to be accessible per NEC-2002 250.68(A).

Start reading at 250.50, and slowly work your way forward, and you will see very much relevant to grounding the service. :)
 
Re: bonding

One thing to ad, if the cold water pipe is metallic underground as well, then it has to be bonded at the first 5 feet entering the house, not just anywhere that is convenient.
 
Re: bonding

georgestoltz -
i took your advise and started to read through 250.52 (a)(7) which gave me the impression that bonding the gas piping system was suitable - until i read down to 250.52 (b) (1) stated that underground gas piping system is not permitted - i guess that I'm having trouble understanding the code - are there any other exceptions that i should know about or do you have a better explanation that i can comprehend - any advise on this topic would be greatly appreciated
 
Re: bonding

A gas piping system is not permitted to be used as a grounding electrode but your are permitted to bond to the gas piping system. The required bond is from the circuit that may energize the gas pipe. In other words, a 15 ampere circuit to the gas furnace has a grounding conductor with it and the act of bonding it to the junction box will ground the furnace and the gas pipe that may become energized. :D
 
Re: bonding

I agree the LP Gas pipe is not suitable as a GE also where as NFPA 54 requires grounding and bonding of interior piping (250.104 in the NEC ), NFPA 58 L-P Gas Code 3-7.1.3 (1998Ed.) States Grounding and bonding shall not be required on L-P Gas systems.

just a thought


Charlie
 
Re: bonding

Charlie, a formal interpretation from NFPA 54 stated that the circuit that could energize a gas piping system was all that was required to bond it the piping, just the same as NFPA 70. :D
 
Re: bonding

Originally posted by stud696981:
One thing to ad, if the cold water pipe is metallic underground as well, then it has to be bonded at the first 5 feet entering the house, not just anywhere that is convenient.
Click to expand...
This is true in order for the water pipe to be used as a grounding electrode. If merely for bonding, the connection may be anywhere.
 
Status
Not open for further replies.
Top