Bonding Gas Piping

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As pointed out by @zbang CSST and flexible appliance connectors are two different things and one is not to be used in place of the other.

CSST is used (or can be used) on fixed appliances, water heaters , boilers, furnaces but not to be used on stoves and dryers that are sometimes moved for cleaning, thats where the flex connectors are used

I am also a licensed gas fitter. I never herd of any bonding/grounding requirements with the flex connectors. Pipe dope etc I don't believe has any bearing as the gas piping is bonded....not to be used as a grounding electrode.

CSST is another matter. Some types are approved for bonding with no jumper around them "counter strike" is one brand I have seen. If the CSST is not approved for bonding then a jumper should be installed around it. At least thats my take
 
augie47 said:
Question has come up locally in regard to gas piping. In 250.104 the Code states one method of bonding allowed is :, Equipment grounding conductor for the circuit that is likely to energize the piping system.
Most of the appliances installed in this area have a short section of CSST connecting the gas hard pipe to the appliance and the assembly has a rubber washer. Does that short CSST connection still provide an adeqauate ground path for bonding the gas pipe ?
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It is my understanding in part based on the bonding requirements for CSST in the plumbing code section, CSST bonding for gas piping supply would be # 6 awg and CSST appliance whips are a different subject. Tthe plumbing code does not address branch circuit equipment grounding and the bonding of gas piping by the appliance equipment grounds has been a long standing bond in the NEC prior CSST being a concern.

I wpuld say you are in compliance with out any additional bonding to appliance fixture whips
 
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