Do metal drain pipes need to be bonded to water supply pipes? What happens if a hot wire touches the metal drain pipe while I'm taking a shower? Because my water supply piping is grounded to my panel and ground rod, and the drain pipes are electrically isolated (rubber boot near point where it exits the house), couldn't I be electrocuted while taking a shower if current flows through the shower water, or would a breaker trip before I received a shock? Should I install bonding between the drain piping and the water supply piping? What does the NEC say about this? The drain pipe is connected to my tub with a rubber washer, and does not appear to be electrically connected to the water supply pipes. I've called two electricians who tell me this is nothing to worry about.
Thanks for any advice.
