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-   -   Hot tub subpanel install, any subpanel (http://www.diychatroom.com/f18/hot-tub-subpanel-install-any-subpanel-162484/)

Maxian 11-07-2012 12:00 PM

Hot tub subpanel install, any subpanel
 
I'll try to have this make sense.

I need to install a subpanel box by patio for spa. It will hold the GFI breaker.

Spa needs standard 3 wire setup.

So, 2 hots and a green ground to subpanel, then the same cutoff, then same to spa.

Now the part I don't know.

Subpanel has accommodation for one other breaker to use for whatever.

I plan on using it to feed electric to our BBQ island.

Standard outlet/light etc will use a neutral wire correct ??

Something I won't need for spa.

If I were to use the secondary breaker for an outlet on BBQ island, can I place the outlet neutral to the same bar that the spa is grounded to in subpanel ?

Make sense ?

Or will I need to run that 4th wire ( white neutral ) from my main box to the subpanel ?

Guess what I'm getting at is I have to run 3 wires from main panel to subpanel but do I need to run the 4th wire for neutral ? I'm asking because 3 wires are easier to fish than 4, plus I'd save the cost of wire.

I want it done correctly also.

I'm cheap, but not dumb
:no:

rjniles 11-07-2012 12:20 PM

You can't use the ground as neutral and must run the 4th wire.

Maxian 11-07-2012 12:26 PM

Quote:

Originally Posted by rjniles (Post 1046691)
You can't use the ground as neutral and must run the 4th wire.

But don't they both get hooked to the same bar in subpanel, or are there 2 different bars ?
Or if they share the same bar do they "bleed off or end up" going different places in main box?
I do not physically have the panel yet so I don't know what it looks like inside.

rjniles 11-07-2012 12:31 PM

Quote:

Originally Posted by Maxian (Post 1046696)
But don't they both get hooked to the same bar in subpanel ?

No they must be separated. If your sub has only 1 bar you have to add a second bar. The neutral bar must not bond to the ground or the sub panel tub.

jbfan 11-07-2012 12:58 PM

To add to this, if you have a gfci in the subpanel, it must have a neutral connection to operate.

Bobka 11-07-2012 04:01 PM

I would recommend calling your electrical inspector...you will need a permit for this most likely...he will expound on what else need be done for this install....NYS has supplemental rules for hot tubs along with the NEC rules...perimitor bonding is required aswell...your state AHJ will fill you in...hot tubs have strict rules the mix of water and electric is a hazard for sure...a non permitted install is not covered under your homeowners insurance in the advent of an issue...do her legal..:thumbup:


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