Hello I have read some of the advice on this group about spa's and
electrical conections but could not find an answer for this question.
Does the subpanel containing the CGFI that is placed near the spa have
to be grounded with a 10 foot copper pole or is the 6 guage bare
ground wire that is part of the 3 wire romex (white red black ground)
that is connected to house's electrical panel's ground enough?
p.s I live in Ontario Canada for code purposes
Thanks for any info
I'm not familiar with the Canadian electric code, but here in the USA, you
would not add a ground rod.
In my installation, I had to use an insulated ground wire. That is required
by the NEC if the hot tub has a light.
My spa (Sundance) has a 220 volt system, and does not need a 120 volt leg.
Therefore, my wires were two 6 gauge copper THWN wires (hots- any color but
green, white or grey, mine were both black), and a 6 gauge green insulated
THWN wire for ground. The ground wire runs all the way from the main panel
(in my case a sub panel I installed in my basement), to the disconnect box,
and from the disconnect box to the spa, where it connects to a ground
The NEC does not allow romex to be used at all anywhere in a spa circuit if
there is a light in the spa.
All wiring from the source to the spa must be in approved conduit for the
entire run also.
Again, this is the NEC. I'm not sure how things are done in Canada.
Try this website: Homewiringandmore.com. They have an excellent bulletin
board, moderated by a master electrician.
This is where I got all my spa wiring questions answered. I believe that
they are also familiar with the Canadian electric code.
On 10 Nov 2003 12:42:25 -0800, email@example.com (Merv) wrote:
In the US a spa requires a GFCI breaker, and normally you'd have two
hot and a ground to the spa itself (depends on the spa as well).
Romex isn't allowed for spas with a light, and conduit is required.
You would not normally use a grounding rod, the ground would be
continuous from the main service entrance through the spa cutoff
switch to the spa itself. Locally, spa and pool grounds cannot be
But, Canadian codes may differ, and there may be local restrictions as
well. Plus you may have a special situation you didn't mention and we
can't see. Why not simply check with your local code authority and
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