Locale: WA State, U.S.
Inspector approved gas plumbing and followed up later, saying: "Please note that we will be verifying the bonding of the new gas piping at the next inspection, please contact L&I for any questions regarding electrical. "
Gas plumbing will be connected to tankless water heater via flex hose. I'm assuming the flex hose doesn't count as proper bonding for the gas plumbing. So can I run a ground wire from the electrical outlet where the gas water heater will be plugged in or even bond to the water heater directly (since it is grounded via outlet plug)?