Should a copper line from a propane tank be grounded/bonded?

New construction inspect today and they literally set the tank yesterday. Not sure if the copper was already set, but the exterior line had me scratching my head and didn’t see any signs of grounding or bonding. What say ye with expertise on this.

1 Like

I don’t ever see them separately bonded/grounded. The gas line should have a path to ground at the equipment it is serving, in most cases. I believe that is all that is required, unless there is some yellow CSST installed.

1 Like

It only services 3 appliances. 2 non vented gas fireplaces and the range/stove. Actually had a nice manifold set up for them.


the line travels underground to the tank ???

1 Like

Underground from the tank to the point of the regulator seen in the pic.

1 Like

Of course the gas stove is connected to a grounded circuit. My assumption is that the fireplaces are as well?

The fireplaces were roughed in with only the line and tip shutoff valve. They did have a shutoff at the manifold too. Nothing circuit wise that I saw on the fireplaces.

Great question. Does a buried copper LP gas line need to be bonded?

I would have to double check, but can’t a ground rod be buried horizontal if it is a minimum of 30"? So, if the trench is a minimum of 30", isn’t it acting as its own ground rod?


that was where my thoughts were going but I am not an electrician…

1 Like

I could smell what you were cooking.


Good question and something I’ve really never considered.

IMO the pipe undergound, as long as it extends 10’ underground, is grounded, but looking at the regulator I see teflon tape at the joints, so maybe a jumper wire?

Then again it could never hurt to bond it to the GEC or the grounding rod.


Kevin Im pretty sure in Ohio You licensed working guys arent allowed to talk about this kind of stuff, prolly not even look at it…please leave that to us retired guys so You don’t get turned into a frog or something…


Yea, everytime I mention anything to do with an electrical system I wonder if I might be opening a can of MP worms. :thinking::zap: :boom:



Better get to it.


No expertise here but I can’t believe that flexible copper carrying propane is allowed to be installed like this on the side of a building. It feels very wrong to me but I’ve never come across this and haven’t done any research yet.

This is what the NEC requires. If there is a gas appliance the EGC run with the branch circuit is all that is required to bond a gas pipe.

250.104(B) Other Metal Piping.
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 points of attachment of the bonding jumper(s) shall be accessible.


Do not add additional bonding. You do not want to turn that into an electrode. Most likely it is ‘bonded’ via the EGC at one of the gas appliances. Usually at the furnace.

What Rob said.

David You will be amazed how You see lp gas lines run given a little time in the field…with a 600 to 1 expansion ratio on ignition You would think they would be a little more careful to protect the lines…

You can say anything you please here and in your reports. I don’t care.Just telling the newbies what Ohio law is and the OHIB too.