Spa Hook Up Questions

aguamarina4u

Hi Board, (Location - California)

We are anticipating the delivery of our Hot Spring
Envoy SPA and planning the electrical work.

The owners manual states that the waterproof conduit
connects to the IQ 2020 control panel using a 3/4"
liquid tight flex conduit fittings. The cable run
(through water tight plastic conduit) between the GFCI
30/20A breaker box and the IQ 2020 requires four #10
AWG wires and two #12 AWG cables, the local code
states that the conduit cannot be filled by more than
40%.

So my questions are:

1) Would these 6 wires occupy < 40% of a 3/4" conduit?
(I was planning to use 1" conduit but am concerned
that I will have a problem connecting it to the SPA)

2) What size conduit have other Hot Spring owners
used?

3) Is there some kind of waterproof reducer I can use
to get down to the 3/4" size that the control box
calls for or will a 1" conduit also fit the IQ 2020
controller?

4) We plan to use THHN cable in the watertight
conduit, I read that multi strand is best for this
application because its compressible when you tighten
down the screws, is this good information?

5) We plan to use 6/3 Romax cable for the run from the
main breaker box to the GFCI 30/20A breaker box, does
anyone know what gauge the solid earth wire is on this
type of cable? (the Hot Spring spec calls for #10
AWG).

Many thanks in advance...appreciate any reply :-)

zel

I'm sorry I dont have the answer you need, but if you cant find it here, try on www.spaforums.com I found alot of spa info there when I needed it. Good Luck.

darren

1. I am thinking THHN is the same as T90, i could be wrong and if i so i
am sorry. For T90 you can fit 10 #10 in a 3/4 so your 4 10 and 2
12 will be fine. Remember you will also need to run a ground in that
plastic pipe as well.

3. Should not be a problem, but you would never do this because you
still will only be able to use the calculation for 3/4 due to that
reducing washer.

Thats a start can't answer #5 for you because I have no clue.

Darren

Speedy Petey

Here is a copy of my reply to you in another forum:

__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.

aguamarina4u

Thanks, I appreciate the input!

NateHanson

I thought you could only put three current-carrying conductors into any one conduit. Did I misunderstand that part?

Speedy Petey

YES. Very much so.

__________________
Sometimes I feel like if I answer any more questions it is like someone trying to climb over a fence to jump off a bridge and me giving them a boost.

NateHanson

Well, wouldn't be the first time. :o

Thanks

darren

Hey Nate

When you have more then 3 wires in a pipe you have to derate them, for they carry less current. This is where you may be getting confused. If you have a 6 inch pipe you are able to put up to 200 #12, I still want to see someone do this.

Darren.

NateHanson

Yes, that's it darren. I looked up where I read it and it was the ampacity table.

Still wrong, but at least I didn't totally imagine it.