Proper CSST bonding

[Sean Fogarty]

Here, I found the reason from gastite

Proper bonding and grounding will reduce the risk of damage and fire from a lightning strike. Lightning is a
highly destructive force. Even a nearby lightning strike that does not strike a structure directly can cause all
electrically conductive systems in the structure to become energized. If these systems are not adequately
bonded, the difference in electrical potential between the systems may cause the charge to arc from one
system to another. Arcing can cause damage to CSST. Direct bonding and grounding as set forth above will

reduce the risk of arcing and related damage over a non direct bonded system.

[Sean Fogarty]

BTW gastite has a product called flashshield. They say this tubing does not need to be bonded.

[Bob Elliott]

Originally Posted by jpope

Water piping can be used as the GES, but gas piping cannot be used as the GES, nor can it be used as a primary path from the service equipment to the grounding-electrode.

Metallic piping (gas or water) is not "grounded" (even though it may appear to be so), it is "bonded" to the electrical system. The electrical system is "grounded."

Actually I do not think bonding to a water pipe would be a good idea unless you can confirm that the water pipe is all conductive leading to the electrical ground.
The communication industry stopped allowing conductors to be bonded to water pipes years ago.

[Jeffrey R. Pope]

It's a terrible idea, that's one of the reasons it is no longer used. Many systems lost their CES as soon as the home was re-piped. Not all plumbers know what that silly clamp is for...

[Bob Elliott]

Good reminder to check for that water meter jumper wire.

[Bruce A. King]

Originally Posted by sfogarty

BTW gastite has a product called flashshield. They say this tubing does not need to be bonded.

Make sure you know the difference between "bonding" and "additional bonding" when talking about CSST.

[Bob Elliott]

Originally Posted by bking

Make sure you know the difference between "bonding" and "additional bonding" when talking about CSST.

Correct as it simply conducts and dissipates 10 x better.

[Bruce A. King]

Originally Posted by belliott

Correct as it simply conducts and dissipates 10 x better.
Attachment 40925

You are referencing the new design of that csst not bonding vs additional bonding right?

Many home inspectors report "gas pipe not bonded" when it actually is.
The pipe is electrically connected to the furnace cabinet via the furnace valve mounting and the branch circuit ground. This is a very poor high resistance bond to ground and has been improved by what is called "additional bonding".

The new pipe, usually black, may not need "additional bonding" according to the manuf or the code at this time but it is a good idea.

[Bob Elliott]

Check out the video on their site Bruce.
But yes it all is bonded I hope.
This stuff just conducts better according to them.

[Jeffrey R. Pope]

Originally Posted by bking

The pipe is electrically connected to the furnace cabinet via the furnace valve mounting and the branch circuit ground.

Regardless of the material used (CSST, black-steel pipe) this is an inadequate bond, and does not satisfy the NEC bonding requirements.

[agallatin]

Originally Posted by jpope

You're missing the point Sean. The gas lines are not GROUNDED, they are BONDED (to the electrical service). Read Bruce's post.

There is no need to "ground" the piping. Only the electrical system needs to be "grounded."

Some gas co. in some areas do install a ground rod at the meter . That is gas co. decision for , they say safety reasons against outside static .