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wewhambone

12:43PM | 09/25/05
Member Since: 09/24/05
2 lifetime posts
Bvelectrical
Hi all:

I have a main house with a 200 amp service. I have a garage/carriage house which I tapped off of this service (using two spaces) with two 40 amp breakers. The box in the garage/carriage house has 12 spaces which I filled up with the usual 15-20 amp breakers for lighting circuits, refrigerator, water heater (110v gas fired), furnace, etc. I never anticipated the addition of an outdoor hot tub which would logically come off of this service, given its location.

My question is this: I need to find a way to bring a 50amp/220v line out to the hot tub off of this panel. It's conceivable that I could double up some of the existing circuits to free up two spaces (I assume I need two) to pull the 250v off of this. Can you assist in this "how to"?

AND/OR

Do I run a line out of this and into a new panel box for the hot tub?

OR

SHould I buy a larger panel and re-wire the whole thing to allow space for a 250v/50amp circuit off of it?

If anyone can give me some advice on this, I'd appreciate it. Thanks in advance.

househelper

04:51AM | 09/26/05
Member Since: 03/31/05
265 lifetime posts
I see several problems here, the most obvious is the garage panel being powered from a 40 breaker. If the wiring will only support 40A, you will have a problem running a 50A hot tub and the existing circuits. You should evaluate that part of your setup first.

You could either combine a couple of low use circuits to free up space or if the panel allows, use tandem breakers to free space.

The hot tub circuit would feed from the panel to a disconnect within site of the hottub. A 50A GFCI breaker would be used either at the disconnect or at the panel (best). Wiring would be 6ga copper.

wewhambone

10:20AM | 09/26/05
Member Since: 09/24/05
2 lifetime posts
Panel to garage is 80amps - a pair of 40amp breakers is protecting it at the main panel.

Thanks for the info.

househelper

10:32AM | 09/26/05
Member Since: 03/31/05
265 lifetime posts
A pair of 40A breakers on a 240V circuit provides protection at 40A, not 80.

MrElectricOly

05:02PM | 10/05/05
Member Since: 05/11/03
62 lifetime posts
You cannot wire the hot tub from the garage panel! You do not have enough capacity in a 40 amp panel to add a 50 amp circuit! You must come from the main service (all the way to the hot tub disconnect), or run a larger feed to the garage (like 80 -100 amps) and install a larger panel there, then you could wire the hot tub from there. Be sure to install a GFCI breaker, or disconnect and you will need 4 wires all the way to the hot tub. Mr. Electric

Jim Simmons
WA State Master Electrician


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