2 screw ground clamp

[sparkync]

Can a 2 screw ground clamp that is usually used for water pipe be used outside? I have a gas line that needs to be bonded with the ground rods at the service, and it would be a whole lot simpler to bond it when I go to the ground rods outside, than going back under the house with it.
Thanks

 

[LarryFine]

I know the bronze ones can.

 

[mtnelect]

In California you can't bond to the gas line, I guess you can in other states ?

 

[sparkync]

Ok, thanks. The bronze one is the one I have.

 

[sparkync]

My understanding and what I've done in the past, is bond the gas line, just in case it gets energized by wiring within the premises.

 

[hillbilly1]

In California you can't bond to the gas line, I guess you can in other states ?

It may be csst, which is required to be bonded, don’t know how Cali would get around that rule, unless csst is prohibited there.

 

[letgomywago]

In California you can't bond to the gas line, I guess you can in other states ?

There's a WAC rule requiring in in WA within 5 ft of the meter. I think it's a poor idea but not going to fight it either.

 

[curt swartz]

In California you can't bond to the gas line, I guess you can in other states ?

Can you please site the CA code that prohibits this. Gas lines get bonded by every gas appliance that also has an electrical connection.

 

[electrofelon]

My understanding and what I've done in the past, is bond the gas line, just in case it gets energized by wiring within the premises.

and just note the the gas pipe is bonded by the EGC run with the circuit serving the appliance that is likely to energize the piping. So generally no other bonding is necessary.

 

[electrofelon]

In California you can't bond to the gas line, I guess you can in other states ?

NEC says you cant use the gas pipe as a grounding electrode, but it still needs to be bonded. Maybe that is what you were thinking of?

 

[mtnelect]

Can you please site the CA code that prohibits this. Gas lines get bonded by every gas appliance that also has an electrical connection.

See attached document from the Southern California Gas Company.

 

[mtnelect]

See 2023 NEC 250.52 Grounding Electrodes
(B) Not permitted for use as grounding electrode
(1) Metal underground gas piping system

 

[curt swartz]

See attached document from the Southern California Gas Company.

That says you can't bond the house line to the supply line. The utilities install insulating fittings at the gas riser to isolate their underground system from the house piping.

That doesn't say you can't bond the interior gas piping which is required by the NEC.

 

[mtnelect]

Can you please site the CA code that prohibits this. Gas lines get bonded by every gas appliance that also has an electrical connection.

Yes, I agree.

 

[infinity]

That doesn't say you can't bond the interior gas piping

I agree. If you want to waste time and money bonding the gas line with an additional bonding jumper you can.

 

[Sea Nile]

I know this dead horse is beat, but here is my understanding if anyone is interested. Anything that is "likely" to become energized must be bonded. However, even if a gas line is bonded, a gas line can NOT be used as an effective ground fault return path.

 

[winnie]

Applicants must ensure that house line gas pipe is electrically bonded and grounded [...]
Do not allow house line gas pipe to be electrically bonded to SoCalGas gas service piping, gas risers, or meter facilities [...]
Do not use SoCalGas's gas service piping [...] for electric grounding

I couldn't cut and paste from this particular .pdf, but I think I conveyed the meaning correctly.

You _must_ bond inside piping. You must _not_ bond their service pipe or meter equipment.

If you bond outside you will need to be very careful about which pipe you bond to, and be careful about risking corrosion at the bond location. Gas pipe is usually 'black iron' and often painted outside. Bonding outside means breaking through any paint.

-Jon

 

[sparkync]

I couldn't cut and paste from this particular .pdf, but I think I conveyed the meaning correctly.

You _must_ bond inside piping. You must _not_ bond their service pipe or meter equipment.

If you bond outside you will need to be very careful about which pipe you bond to, and be careful about risking corrosion at the bond location. Gas pipe is usually 'black iron' and often painted outside. Bonding outside means breaking through any paint.

 

[sparkync]

I just decided not to bond the gas pipe. If he wants me to bond it, I will run some copper under the house and bond it there.
It goes through the wall right beside my meter/combo. Thanks for the info on corrosion of the gas pipe. I was getting ready to put it there and would have had to scratch the paint off

 

[winnie]

IMHO you could do the bonding outside, but you would need to make sure to paint/protect the connection afterward.

-Jon