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View Full Version : How do you ground a gas line


lonelyplumber
Sep 22, 2010, 10:25 PM
How do I ground an exsisting gas line at a home & what material do I use.

massplumber2008
Sep 23, 2010, 04:22 AM
Hi LP:

What material is your gas piping made from?

If you are using a corrugated gas pipe which name brand of corrugated gas pipe?

How many appliances are hooked to this gas pipe?

What state do you live in?

Answer these questions and then we can answer your question properly, OK?

I'm off to work... will be back in later tonight.

Mark

lonelyplumber
Sep 23, 2010, 08:07 AM
I live in North Carolina, the gas line is hard pipe. And it has 3 appliances hooked up to it

ballengerb1
Sep 23, 2010, 08:12 AM
Is this propane or natural gas? I will not offer an answer since I always thought my gas line was grounded since it enter the home well under ground, never really thought about it further. TKRussel will likely see this and give you the best answer.

massplumber2008
Sep 23, 2010, 08:58 AM
Hi all...

Hard piped gas piping, i.e. black steel pipe, is not required to be grounded as it comes out of the ground. Above the ground, gas piping is BONDED (NOT grounded) by the grounding conductor of the branch circuit of the appliance the gas pipe is serving, such as a furnace. An exception here might be where a gas system hooks only to a gas water heater (no electrical connection)... that may require bonding/grounding somehow, but I've never run into this.

If this was corrugated gas piping then you would usually ground the hard pipe that is connected to the corrugated pipe back to the service panel, but you wouldn't ground directly to the corrugated piping.

Of course, each state has its own code requirements and I have been surprised by just how different each city/town/state can manipulate a code so you will definitely be best to call your local gas supplier or gas inspector and double check the requirements in your town. Please let me know if the codes in your area differ from what I presented above, OK?

Thanks...

Mark

lonelyplumber
Sep 23, 2010, 09:55 AM
Thanks for the help