George I am glad you brought this up, I was hoping someone would.
Bob-The sizing of the bonding conductor for the gas line is talked about in 250.104(B) and it refers to 250.122. Minimum size in this code section is #14 AWG cu or #12 AWG al. So I'm saying that's the minimum.
I do not think it is that easy.
part of 250.104(B)
The equipment grounding conductor for the circuit that may energize the piping shall be permitted to serve as the bonding means.
If it is a cord and plug connected stove it may have a 16 or 18 AWG cord. That cord would also be the bonding jumper.
jes part of 250.104(B)
The equipment grounding conductor for the circuit that may energize the piping shall be permitted to serve as the bonding means.
I take this to mean that the gas pipe will be bonded by the appliances EGC.
I have yet to see a gas appliance that the gas connection was electrically isolated from the appliances enclosure.
IMO the thought of this section is that the gas line can not become energized if the appliances connected to it are properly grounded.
[This message has been edited by iwire (edited 12-24-2005).]
