I am redoing my kitchen and thought it would be easier to replace the copper lines with PEX so it can go snake down the basement water heater easier.
1) I have a gas water heater, why is there a ground wire between the cold and hot copper pipes about 12" above the water heater? Isn't the heater it self metal? And it is sitting on the ground already so what is the reason for the short ground wire between the pipes for grounding?
2) If I do replace the kitchen cold and hot pipes with PEX tubing and connect them to the top of the current water heater what else needs to be done to meet code? I assume now the kitchen faucets are no longer grounded. If this will cause me more problem than I will run it with copper pipe instead of PEX.