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bellianj · Nov 4, 2009, 12:16 AM

Hi All,
I've recently taken on the adventure of setting up the basic wiring of a Midwest hot tub breaker box "service disconnect" with 50 AM GFCI breaker installed. The disconnect box I purchased has an aluminum bar (ground I assume) inside the box that can be connected (?) to one of the three terminals (obviously not the hot so that knocks it down to two). My logic tells me this aluminum bar should be connected to the ground bar along with all other green wires... anyone seen one of these before?

bellianj · Nov 4, 2009, 12:46 AM

First correction is that it is 50 AMP (not "AM") and I should have said "BUS" instead of "terminals". Since this is an external breaker box from my main panel, do I need to install a separate ground rod or is connecting this aluminum rod to the ground bus supposed to cover that?

Thanks!
JB

tkrussell · Nov 4, 2009, 03:43 AM

The feeder cable to this disconnect needs 4 wires, 2 hots, 1 white neutral, and one green or bare equipment ground.

The ground bus is for all green or bare equipment ground conductors. And do not connect any neutral to this bar. Also do not install any ground rods.

The white neutral feeder will connect to the insulated neutral bar, the white pigtail from the GFI breaker connects to the neutral bar, and the white neutral from the tub will connect to a silver terminal on the GFI breaker