Violation/ or effective means?

[nizak]

I have an outbuilding at a residence that has CSST gas piping installed in it.

The black steel pipe that ultimately connects to this is bonded at the service entrance.

The overall distance from the bond point to the CSST is about 250'
In that distance, it is black steel pipe through the house, a non metallic underground direct buried plastic pipe to the building,then at the building ,back to black steel pipe into the attic, then CSST to the heater.

How do I bond the CSST in the building?

Code as I interpret it says that it should be bonded to the electrical service grounding electrode system.

I have a 100 amp 4 wire sub feed going to the outbuildingW/ driven ground rod and #6 Cu EGC.

Is it code compliant to take the bond conductor in the outbuilding to the equipment ground bar located in the sub panel?

Even if I could get it back to the main service point and grounding electrode system, it would be at least 3 times the 75' max length allowed.

 

[kwired]

According to NEC you only need to connect gas piping to the EGC of the circuit that is likely to energize the piping.

The installation instructions for CSST may go beyond that however. I still doubt the intent is to connect to anything further "upstream" then the grounding electrode system of the building it is located in.

"electrical service grounding electrode system" may have different meaning in those installation instructions then it would mean in an article in the NEC - for one thing they likely don't rely on NEC art 100 for definitions of terms they used in those instructions.

 

[Smart $]

According to NEC you only need to connect gas piping to the EGC of the circuit that is likely to energize the piping.

The installation instructions for CSST may go beyond that however. I still doubt the intent is to connect to anything further "upstream" then the grounding electrode system of the building it is located in.

"electrical service grounding electrode system" may have different meaning in those installation instructions then it would mean in an article in the NEC - for one thing they likely don't rely on NEC art 100 for definitions of terms they used in those instructions.

I agree.

Also, instructions often do not take into account all scenarios. For instance, they often assume the csst will be installed at the same building where the service equipment is located. This is why many instructions simply require compliance with the NEC and local code rather than specifics.