I'm trying to interpret and apply the 2017 NEC bonding requirements from 250.104(B) to my existing home gas line. I've read this related question to determine I should use #6 AWG wire, but I'm unsure of how to exactly connect the wire to my gas pipe where it enters my home.
2017 NEC Bonding Requirement - 250.104(B)
If installed in or attached to a building or structure, a metal piping system(s), including gas piping, that is likely to become energized shall be bonded to any of the following:
(1) Equipment grounding conductor for the circuit that is likely to energize the piping system
(2) Service equipment enclosure
(3) Grounded conductor at the service
(4) Grounding electrode conductor, if of sufficient size
(5) One or more grounding electrodes used, if the grounding electrode conductor or bonding jumper to the grounding electrode is of sufficient size
The bonding conductor(s) or jumper(s) shall be sized in accordance with Table 250.122, and equipment grounding conductors shall be sized in accordance with Table 250.122 using the rating of the circuit that is likely to energize the piping system(s). The point of attachment of the bonding jumper(s) shall be accessible.
What is an acceptable means of "bonding" the grounding wire to the gas pipe per code?
For example, code probably wouldn't approve the use of duct tape. Is some sort of clamp OK? If so, what kind and material? Or do I need to solder the wire to the pipe? Seems dangerous with a gas pipe, so guessing the answer is no, but let me know.
Edits based on comments
- 2017 NEC is enforced in my city. I've updated the code pasted above accordingly.
- My gas pipe is black steel.
- Updated wire size per Ed Beal's guidance.