CSST Gas Line Bonding in Cincinnati

If your home has yellow-jacketed corrugated stainless steel tubing (CSST) for natural gas or propane, it needs to be properly bonded to your electrical grounding system. Cooper Electric installs CSST bonding to code across Greater Cincinnati and Northern Kentucky.

What Is CSST Bonding?

CSST bonding electrically connects your CSST gas piping to the grounding electrode system of your home’s electrical service. This creates a low-impedance path to ground. If lightning strikes the home or nearby, bonding reduces the chance and severity of arcing between the gas piping and other metal systems.

Why CSST Bonding Is Necessary

Lightning can travel along CSST gas pipe when it strikes nearby. Without proper bonding, the difference in electrical potential between the gas pipe and nearby metal can cause an arc that punctures the tubing. Damaged CSST can leak gas and lead to a fire or explosion.

Bonding brings the gas line and nearby metal to the same electrical potential, which can significantly reduce the risk of fire or damage to the gas pipe from lightning strikes and power surges.

How CSST Bonding Is Installed

A separate bonding wire is connected to the rigid gas piping ahead of the CSST, or directly to one of the CSST fittings, and run to the grounding electrode system. The bonding clamp is never attached to the corrugated tubing itself, and its location is chosen to keep the bonding wire as short as possible.

  • The bonding conductor is copper or aluminum, solid or stranded, and no smaller than 6 AWG copper (or the aluminum equivalent)
  • The bonding conductor is no longer than 75 feet, per the National Fuel Gas Code, International Fuel Gas Code and Uniform Plumbing Code
  • The conductor is installed, protected and connected according to the National Electrical Code (NFPA 70)

CSST bonding is electrical work. It should be installed by a qualified electrical contractor and inspected by an electrical inspector.

Frequently Asked Questions

How do I know if I have CSST?

CSST is flexible gas tubing, usually with a yellow plastic jacket, often seen near furnaces, water heaters, gas ranges and fireplaces. If you are not sure, call us and we can take a look.

Is CSST bonding required?

Bonding of CSST gas piping is required by the National Fuel Gas Code, the International Fuel Gas Code and the Uniform Plumbing Code, as well as CSST manufacturers’ installation instructions.

Had a lightning strike? See our lightning strike inspection page.

Schedule CSST bonding

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Licensed electrical contractor in Ohio (OCILB #20022) and Kentucky (#CE16472). Serving Greater Cincinnati and Northern Kentucky since 1946.