Probably the same thing others have said mobius. The box can be removed in a reno. With the bond going back to the main distribution it is unlikely to ever be touched again. Similar with the suit panel, the panel can be moved in a reno, but it's unlikely.
I'm not arguing the reasoning, and I agree that running back to the service is the best practice. My point was that it is an inspector requirement, not a code or amendment. The amendment here in Alberta does suggest to do it a certain way, but does not make it a requirement, and there may or may not be something similar in BC. This all goes back to the OP's question where someone working out of their normal area and not familiar with the local inspector may do things that are technically acceptable (and may be acceptable in other areas), but will still get you a violation from that particular inspector.
Let's use the example of a mobile home. Panel is at one end, lets say the back. You drop a #6 down to bond the frame.
Now some gas gets added at the front of the home. Code allows you to bond that gas to the nearest part of the plane with any material suitable for that connection. Around here that is a pipe clamp and a proper connection to the frame.
It's not likely anyone will remove the frame in the future so is it necessary to run the length of the home with a #6?
Let's use the example of a mobile home. Panel is at one end, lets say the back. You drop a #6 down to bond the frame.
Now some gas gets added at the front of the home. Code allows you to bond that gas to the nearest part of the plane with any material suitable for that connection. Around here that is a pipe clamp and a proper connection to the frame.
It's not likely anyone will remove the frame in the future so is it necessary to run the length of the home with a #6?
I like your example, because that is no different than bonding to a steel building. The steel the line is bonded to won't disappear without the rest of the building disappearing too!
So long story short is, if the gas line is that black iron piping, then yes it's ok to bond to that. If it's that yellow tubing or copper piping, then you cannot bond to it.
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