bonding gas pipe in house

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bark

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I have a 320 amp single phase service for my son's house. He now is having gas appliances in the kitchen and a couple of fireplaces. Is gas bonding the same as cold water? He has plastic plumbing and plastic fire sprinklers, although the sprinkler riser is brass, about 4', so I haven't pulled any bond.wire. Now though, I'm thinking a #2 copper to the gas lines. Am I correct? Been a long time for me and a house.
Thanks in advance.
Bark
 
bark said:
I have a 320 amp single phase service for my son's house. He now is having gas appliances in the kitchen and a couple of fireplaces. Is gas bonding the same as cold water? He has plastic plumbing and plastic fire sprinklers, although the sprinkler riser is brass, about 4', so I haven't pulled any bond.wire. Now though, I'm thinking a #2 copper to the gas lines. Am I correct? Been a long time for me and a house.
Thanks in advance.
Bark
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The gas lines are bonded through the EGC of the circuit that is likely to energize the piping. Look at 250.104(B)
 
Gas piping is normally not bonded, unless CSST* is used, in which case one #6 cu should be run to almost anywhere between the gas meter and the nearest rigid gas pipe on the supply side of CSST.

* Corrugated Stainless Steel Tubing
 
Actually the piping is for propane gas. I'm not sure if it's black pipe or the stainless, I'm assuming black pipe. Nothing more than a 20 amp circuit for the the range/oven.
 
bark said:
Actually the piping is for propane gas. I'm not sure if it's black pipe or the stainless, I'm assuming black pipe. Nothing more than a 20 amp circuit for the the range/oven.
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If it's black pipe then no further bonding is required beyond a branch circuit EGC feeding a gas appliance.
 
I'm a tad hazy this morning, and really can't put my finger on it in art 250

But i thought that the theory was to create an equopotential plane within any given stucture.

So, inasmuch as a gas line may be ok on it's egc, the jist would be bonding it to other mettalics such as ductwork or piping that does not have any electrical connection

I do a lot of bonding on local farms, most sparks out my way just go nuts with a roll of #6 or #8 solid

Isn't that aplicable to 'dwelling' as well?

~RJ~
 
Equipotential bonding for livestock and pools is not the same as bonding a gas line. If, for instance, there is a gas furnace, then the equipment grounding conductor of the circuit that feeds the furnace will bond the gas as well as the ductwork.

If, however, there is the flexible CSST then the op may need either a 1/0 or a #2 to bond the gas line. Most areas only require a #6 but the manufacturer of the CSST may state to use 250.66 when sizing the bond.
 
Dennis Alwon said:
Equipotential bonding for livestock and pools is not the same as bonding a gas line.
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no, there are seperate code sections for each

my Q was more that the theory is similar

think lightning strikes and flashover....:)



If, for instance, there is a gas furnace, then the equipment grounding conductor of the circuit that feeds the furnace will bond the gas as well as the ductwork.
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well there's plenty of these in the world>
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Conillustration.jpg


~RJ~
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Dennis Alwon said:
Equipotential bonding for livestock and pools is not the same as bonding a gas line. If, for instance, there is a gas furnace, then the equipment grounding conductor of the circuit that feeds the furnace will bond the gas as well as the ductwork.

If, however, there is the flexible CSST then the op may need either a 1/0 or a #2 to bond the gas line. Most areas only require a #6 but the manufacturer of the CSST may state to use 250.66 when sizing the bond.
Click to expand...

Dennis
Is this spelled out in NEC ?

Specialty application because of use of CSST ?
 
MyCleveland said:

Dennis
Is this spelled out in NEC ?
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No, what he said is that the manufacturer instructions can refer you to 250.66 of NEC.

NEC doesn't directly cover bonding of CSST at all. CSST is listed and it's installation instructions are part of it's listing. There is differences in install instructions from one product to another at times. IMO this bonding is the responsibility of the CSST installer. If he wants to have the electrician do some of the task that is up to him, but bonding is part of the CSST install and not part of the electrical install. An EI that inspects electric only shouldn't cite anything involving CSST bonding unless it causes other NEC issues for some reason. Citations for improper bonding of CSST should come from mechanical/gas inspector.
 
Omegaflex used to have the yellow flex that called for using 250.66 however they don't appear to sell it anymore and their black piping called counterstrike does not need any bonding, however the gas code requires the minimum #6
 
kwired said:
No, what he said is that the manufacturer instructions can refer you to 250.66 of NEC.

NEC doesn't directly cover bonding of CSST at all. CSST is listed and it's installation instructions are part of it's listing. There is differences in install instructions from one product to another at times. IMO this bonding is the responsibility of the CSST installer. If he wants to have the electrician do some of the task that is up to him, but bonding is part of the CSST install and not part of the electrical install. An EI that inspects electric only shouldn't cite anything involving CSST bonding unless it causes other NEC issues for some reason. Citations for improper bonding of CSST should come from mechanical/gas inspector.
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I agree, the guy installing the CSST whether it's a plumber or some other trade they should be installing the bonding connection, this is not part of the NEC.
 
If the bonding needs to be installed in a panel then they are not allowed to go into the panel. The heating guys can hire their own electrician or you do it and get the money from it.
 
rcarroll said:
The International Fuel Gas Code requires the "Not smaller than #6 cu" to be connected toe the electrical service grounding electrode system.
Not an EC's problem.
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Ron, do you guys allow the bonding to be done by others even if they have to enter the panel? Around here they can bond but they cannot go into the panel.
 
packersparky said:
romex jockey said:
That is not metal gas piping. The NEC does not require it to be bonded. Look at informational note 1 to 250.104(B).
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Ok....

(B) Other Metal Piping. If installed in or attached to a build‐
ing 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 ground‐
ing 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.
Informational Note No. 1: Bonding all piping and metal air
ducts within the premises will provide additional safety.
Informational Note No. 2: Additional information for gas piping
systems can be found in Section 7.13 of NFPA 54 -2015, National
Fuel Gas Code.
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{highlights in red '17}

~RJ~
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