Hey guys

I picked up some work for a local fireplace store bonding the gas lines on installation. They have been installing them for years but only recently failed for a missing gas bond to the black pipe. I had already done several bonds for the tract pipe but apparently they had no idea that a bond is required for the black pipe. It actually works out good, now they call me on every installation to do the bond.

The black pipe can be bonded anywhere on the pipe. It may be at the service, furnace, water heater, crawl space, attic, etc. Is there a way to check for bonding that is not easily visible. Can I do a simple continuity test, hot to ground? If the pipe runs against something that is grounded, the meter would show ground but it is not truly bonded. It would still be a permit and a service call, but would save the work.