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rjcaster 09-18-2011 10:32 AM

Grounding CSST gas line
 
My metal gas line runs into the house in a finished basement. I can reach where the metal gas line is connected to the CSST. If I clamp the #6 ground wire on the metal pipe just before the CSST connection and run the ground to my bus panel, will that work or MUST the clamp on the metal pipe be on the outside of the house?

gregzoll 09-18-2011 11:10 AM

The NFPA.org website has this info avail, if you want to read through firsthand. As for the bond, when you run back to the panel, in reality you are creating a loop. The bond needs to be tied I do believe to the grounding rod.

AllanJ 09-18-2011 11:20 AM

The bonding wire from the gas pipe can be connected to (1) the neutral bus in the panel, (2) the ground rod, (3) the main water pipe where it is bonded to the electrical system, or (4) any of the fat ground wires (grounding electrode conductors) connecting the previous three. Whichever is most convenient.

You are bonding the gas piping in your house to the electrical system ground (rod and/or water pipe). The gas pipe itself exiting the house does not qualify as a grounding electrode.

No specific bonding wire is needed for the gas pipes if there is a gas appliance (furnace, etc.) that uses electricity and wired up with a proper ground wire back to the panel.

What is a CSST?

gregzoll 09-18-2011 11:46 AM

Allan, I think that they are talking about the plastic sheathed gas piping, that likes to pinhole. Personally I would not touch the stuff, and still like the Black Iron.

brric 09-18-2011 12:04 PM

Corrugated stainless steel tubing gas piping must be bonded as per the tubing manufacturer. Either from the iron piping it is connected to or from the brass fitting of the tubing back to the electrical panel. Do NOT attempt to bond the corrugated tubing itself or you will crush it.


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