USING CSST FLEXIBLE GAS LINE TUBING IN YOUR Home
This week's tip is about proper bonding of Corrugated Stainless Steel Tubing (CSST), which is a common flexible gas line application that exists in many homes.

What is the issue? The use of flexible gas lines require the gas system be bonded to the electrical ground service in the home to prevent possible damage caused by electrical or lightning energy.

This week's tip will show you how to identify CSST in your home and determine if it's properly bonded.

*You can contact a licensed Electrician if you need help determining if you have CSST and/or your system is properly grounded.
 How to Identify CSST
The type of CSST which is most susceptible to electrical charge build-up can be identified by its yellow outer coating. CSST is frequently used because it's flexible and can be easily routed around corners and through wall openings. It will be attached to hard gas lines at some point, so begin by following the gas line in from your gas meter (which may be outside of your home). CSST may be located in a basement, crawl space, or attic space where gas is routed.

The photo to the left shows CSST at the connection to the hard gas line.

*The flexible adapter line that attaches directly to appliances (such as a gas stove or dryer) which allows movement of the appliance does not need to be bonded. 
How to Determine if CSST is Bonded
Bonding can be located anywhere from the gas meter to the first attachment of CSST. 

There are 2 ways the bonding could be made - 1) directly to the hard gas line, or 2) to the hex -shaped fitting on the CSST that connects to the hard gas line. 

Whichever technique is used, there will be a clamping device with a copper wire that runs out to the grounded source.
What if my CSST doesn't appear to be bonded?
The home to the left is bonded at the gas meter outside of the home.

If you have CSST and do not see apparent bonding, contact a licensed Electrician for help verifying.

*If you have CSST that has a black coating, it most likely is a newer arc-resistant type that does not require bonding per manufacturer installation standards.
We hope these tips have been helpful. Feel free to share it with anyone you think may benefit from it. 
 
 
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