Bonding gas pipe

[crtemp]

I'm looking at 250.104 (3)(B) and I'm unclear on one thing. The only gas appliance in this house is a gas range. This gas pipe was installed after I roughed in the house and I did not know about it until I showed up to do the trim. I had a junction behind the range for a bunch of under cabinet lights and there was power in it so I just wired a plug on it instead of blanking it off. It is on a 15 amp lighting circuit. So my question is what size wire do I have to use to bond the pipe? I'm thinking that this would be the only circuit that is likely to energize the pipe. Can I just bond it with a 14 guage wire??

edit.
Found my answer in my states local rules

104(B) Bonding ? other metal piping.
(10) For flexible metal gas piping, installed new or extended from an existing rigid metal piping system, either:
(a) Provide a copy of the manufacturer?s bonding instructions to the inspector at the time of inspection and
follow those instructions; or
(b) The bonding conductor for the gas system must:
(i) Must be a minimum 6 AWG copper; and (ii) Terminate at:
(A) An accessible location at the gas meter end of the gas piping system on either a solid iron gas pipe or a cast flexible gas piping fitting using a listed grounding connector; and
(B) Either the service equipment enclosure, service grounding electrode conductor or electrode, or neutral conductor bus in the service enclosure.

 

[kwired]

Based on NEC alone, read 250.104(3)(B) carefully, second to last sentence says "The equipment grounding conductor for the circuit that is likely to energize the piping shall be permitted to serve as the bonding means."

The EGC for the appliance is sufficient in this case.

Next up is the issue of properly bonding CSST if that is what is used for gas piping - but that is not an NEC issue it is an issue with installing the CSST, and IMO is the CSST installers problem even though they want to push it on to the electrician most of the time. They used to claim they were not allowed to terminate in electrical equipment - and I agree, but we have a requirement for providing an intersystem bonding termination device now and they can run to that.