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Gas Pipe Bonding?? #2962 07/31/01 08:41 PM
Joined: Apr 2001
Posts: 507
G
golf junkie Offline OP
Member
This is a continuation of the discussion in the "Grounding to water pipes" thread.

My take on gas pipe bonding is;

It's required by the NEC.

The AHJ doesn't enforce it.

If the gas company finds it, they will disconnect it.

As a result of the above, we don't install a bonding jumper to the gas pipe.

?????????????

GJ

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Re: Gas Pipe Bonding?? #2963 07/31/01 09:06 PM
A
Anonymous
Unregistered
My take on gas pipe bonding is:

It's required by the NEC.
I do it. If I don't do it, fault current will run through the gas line anyway, but instead via a hazardous circuit.
If necessary, I'll put it where the the gas company won't easily find it. If they do disconnect it, it's their liability. If I don't install it, its my liability.

As a result of the above, I install a bonding jumper to the steel gas pipe (premises side, of course).

Re: Gas Pipe Bonding?? #2964 07/31/01 09:37 PM
Joined: Mar 2001
Posts: 2,056
R
Redsy Offline
Member
Our local utility (PECO) requires and expects to see it. Besides, isn't it likely that incidental contact will occur between the gas line and an appliance that is in contact with ground, anyway. Removing the bond doesn't seem to fully isolate the gas line.

[This message has been edited by Redsy (edited 07-31-2001).]

Re: Gas Pipe Bonding?? #2965 08/01/01 05:34 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
As Redsy pointed out, any appliance that uses gas & electric will likely make a bonding connection.

The gas companies don't follow their own code, which is where the requirement is derived from.

There were several proposals made about 250-104(b), but I haven't had time to read them.


Few things are harder to put up with than the annoyance of a good example.
Re: Gas Pipe Bonding?? #2966 09/02/01 11:13 AM
Joined: Aug 2001
Posts: 142
B
bordew Offline
Member
Quote
Originally posted by Dspark:
My take on gas pipe bonding is:

It's required by the NEC.
I do it. If I don't do it, fault current will run through the gas line anyway, but instead via a hazardous circuit.
If necessary, I'll put it where the the gas company won't easily find it. If they do disconnect it, it's their liability. If I don't install it, its my liability.

As a result of the above, I install a bonding jumper to the steel gas pipe (premises side, of course).

DSPARk;
I agree with everything you said, although I never heard of the gas company disconnecting them.
When it first came out in '99 the first service upgrade I did, I bonded the gas line as required in the code. the inspector promptly called me and asked me," why did You bond the gas line" and replied well thats what the code says to do, he said we are not going to do that in our area.
In October '99 I went to my state required code classes for 10 hours CEUs, and the inspector there said you must bbond to the gas line, so go figure.

Re: Gas Pipe Bonding?? #2967 09/02/01 11:32 AM
Joined: Oct 2000
Posts: 5,389
S
sparky Offline
Member
I beleive there is a long & colorful history of gas pipe vs. ECG, GEC, and bonding that is again going to change in 2002.... [Linked Image]

Re: Gas Pipe Bonding?? #2968 09/04/01 04:26 PM
A
Anonymous
Unregistered
>going to change in 2002....

I called someone down on this claim and no supporting documentation was forthcoming except some ROPs that failed to pass.

Do you have a verifiable reason to believe that it is changing?




[This message has been edited by Dspark (edited 09-04-2001).]

Re: Gas Pipe Bonding?? #2969 09/04/01 06:45 PM
Joined: May 2001
Posts: 717
G
George Corron Offline
Member
FYI guys. The code says you cannot use the gas pipe as an electrode, and you WILL bond it to the system. The bond can come from the piece of equipment likely to energize (all of which used to be in 250-80-(b) before they messed up 250).

A local jurisdiction in Va was requiring a separate ground rod to the gas UNCONNECTED to the service GEC, in other words isolated.

I won that fight about 5 years ago as far as VA is concerned. So in VA, you will bond it as per NEC, but you cannot use it as an electrode the way we used to.

Re: Gas Pipe Bonding?? #2970 09/04/01 06:51 PM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
For what it's worth, the British Regs. say that gas lines should be bonded, but are not allowed to be used as a substitute for a ground rod or as a grounding connection.

Re: Gas Pipe Bonding?? #2971 09/04/01 08:10 PM
A
Anonymous
Unregistered
Neither the gas line nor water line should be used in place of the necessary dedicated grounding electrode(s).

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