GFCI requirements

[gmayeux]

i have installed a tankless water heater underneath a pedestal lavatory, it is 20 amp 240 volt 3 wire, cord and plug connected, the inspector is mandating that it be GFCI protected,
what would be the best way to accomplish this. i can put a GFCI breaker but would this mean running a neutral and if so what would it connect to .

 

[iwire]

You should ask the inspector for a code reference, the NEC does not require this to be on a GFCI.

If you decide to put one in then all you need to do is buy a two pole GFCI. You will not have to run a neutral to the load but you will have to connect the neutral from the breaker to the panel neutral bar.

 

[480sparky]

The inspector needs to read 210.8.

 

[charlie b]

. . . the inspector is mandating that it be GFCI protected. . . .

Based on what? 210.8 only requires GFCI protection for 125 volt outlets, and I didn't see anything in 422 (Appliances) that talked about GFCI. Unless there is some related local requirements (and if there is, you should be able to ask for a specific citation), I would say that this inspector is making up rules, and does not have the authority to do so.