I am installing a 220-volt circuit consisting of two (2) #6 conductors and a #10 ground via rigid conduit to a 50-amp Hot Tub. I have also run a bonding wire to the load center which is within 5-feet of the hot tub. Inside the load center the neutral and ground have been bonded. I didn't run a neutral because I don't have a requirement for 110-volt service. The GFCI functions properly in this configuration but I am not sure that I am in conformance with the code. Can someone direct me to the proper location in the code so that I can figure out if this configuration is OK or I need to go through the trouble of adding a neutral. Thanks

Neutrals are not required for GFCI's to function properly.

If your concerned get a resitor that's R <= 240/25E-3 and the wattage of that resistor should be W> (240)(240)/R and connect it from one of the 240 legs to ground. Breaker should trip.

1) GFI/disconnect should be at least 5' from the tub.

2) You DO NOT need a bond from the tub to the panel.

3) The neutral should NOT be bonded in this panel/disconnect!

4) A GFI does not need a LOAD neutral to function. It DOES however need a LINE neutral to function.
The only reason it works is because the neutral is bonded in the panel. IF this is a sub-panel then this is incorrect.
If the tub is a straight 240v load then you are correct in that you do not need a neutral to the tub.

Tell us if the panel housing the GFI breaker is the main panel or a sub-panel.

Thank you guys for trying to help.

The load center is a SUB PANEL to the MAIN PANEL. The main panel has a 60-amp two pole breaker. I ran 2-#6's and 1-#10 from the main panel to the load center. I did not run a neutral. All loads at the load center are 220-volt.

If I can't bond the neutral bus in the sub-panel then I definitely need a neutral for the GFCI to work. It works now but only because I bonded the sub-panel.

It's going to be a pain in the you know what but I see that I may have to pull the wires out and add the conductor. If I need the neutral do I need a #6 or can I use something smaller?

Yup, you definitely need a neutral. For a feeder wire that small I would stay with the same size.

Neutrals are not required for GFCI's to function properly.

If your concerned get a resitor that's R <= 240/25E-3 and the wattage of that resistor should be W> (240)(240)/R and connect it from one of the 240 legs to ground. Breaker should trip.

Wow!:eek: Don't kill us with the technical stuff! <Joke>:D ;)