**“G2411.1.1. **[and 310.1.1 in the Fuel Gas Code]: CSST. Corrugated Stainless Steel Tubing (CSST) gas piping systems shall be bonded to the electrical service grounding electrode system at the point where the gas enters the building. The bonding jumper shall not be smaller than 6 AWG copper wire or equivalent.”
That’s now a code requirement, not just a recommendation from a few manufacturer’s of CSST involved in a past lawsuit.
**Here’s the impact: **An appliance connector **IS **classified as CSST. Therefore, just one appliance connector in a system using other materials (black iron, copper, etc.) for gas distribution will require the system to be bonded from the gas meter to the GEC or Service Entrance Panel ground bus.
I’m not sure what NEC code you’re talking about. Are you’re talking about bonding the system in general, disregarding CSST? If so, that requirement is excepted if there is an appliance that is grounded using the appliance electrical supply. However, the presence of just one appliance connector would require a separate system ground from the meter, like I described above.
I’ve never before called out the need for a separate system bond if an appliance connector is present.
They were allowing the little green wire equipment ground inside the furnace cabinets to act as the entire gas pipe bond around here since the pipe is bonded to the furnace cabinet.
Then in late 2007 many areas started requiring “additional bonding” which had to be the large conductor at the main pipe bonded to the GEC or the service panel neutral/ground bus if CSST distribution piping was present. This was a new item for electricians but now its in the 2009 Fuel Gas code.
If you do this in NYC or Westchester County, or Rockland County… The gas utility will shut down the service.
Consolidated Edison Companies are the gas and electric utility for many counties, and are the AHJ.
If this practice is found they will red flag the dwelling and shut both services off immediately.
They will require a licensed plumber and electrician perform whatever modifications are necessary, ad will require their presence on site prior to re-energizing the site, and prior to turning on the gas.
Sounds like those areas use metallic piping from the street to the house.
They do not want any chance of voltage or any current flow on their main pipes and feeding from house to house etc. So it is basically pretty well grounded to the earth already without actually using an electrical system and adding in the chance for wiring errors or massive malfunctions.
Around here the service lines are plastic unless an older home in some areas.
They actually install a tracer wire next to the plastic so they can locate it later.