Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-24-2007, 03:25 PM   #1
Newbie
 
Join Date: Apr 2007
Posts: 2
Share |
Default

Spa Hook Up Questions


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 :-)

aguamarina4u is offline   Reply With Quote
Old 04-24-2007, 06:50 PM   #2
zel
Member
 
Join Date: Mar 2007
Location: SE PA
Posts: 229
Send a message via AIM to zel
Default

Spa Hook Up Questions


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.

zel is offline   Reply With Quote
Old 04-24-2007, 06:55 PM   #3
Electrician
 
Join Date: Nov 2005
Location: Winnipeg, Manitoba
Posts: 1,137
Default

Spa Hook Up Questions


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
darren is offline   Reply With Quote
Old 04-24-2007, 07:19 PM   #4
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,784
Default

Spa Hook Up Questions


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

Quote:
Considering you legally fit 10 - #10THHN conductors in 3/4" Liquidtite, your seven is fine.

The rest of your plan seems fine as well.
6/3NM has a #10 ground.

Remember, you can ONLY use the NM cable for the inside wiring portion of this circuit.
__________________
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.
Answers based on the 2008 & 2011 NEC.
Speedy Petey is online now   Reply With Quote
Old 04-25-2007, 11:15 AM   #5
Newbie
 
Join Date: Apr 2007
Posts: 2
Default

Spa Hook Up Questions


Thanks, I appreciate the input!
aguamarina4u is offline   Reply With Quote
Old 04-25-2007, 11:36 AM   #6
Member
 
Join Date: Apr 2007
Location: Downeast Maine
Posts: 999
Default

Spa Hook Up Questions


I thought you could only put three current-carrying conductors into any one conduit. Did I misunderstand that part?
NateHanson is offline   Reply With Quote
Old 04-25-2007, 11:46 AM   #7
Licensed Electrical Cont.
 
Speedy Petey's Avatar
 
Join Date: Feb 2004
Location: NY State
Posts: 6,784
Default

Spa Hook Up Questions


Quote:
Originally Posted by NateHanson View Post
I thought you could only put three current-carrying conductors into any one conduit. Did I misunderstand that part?
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.
Answers based on the 2008 & 2011 NEC.
Speedy Petey is online now   Reply With Quote
Old 04-25-2007, 11:52 AM   #8
Member
 
Join Date: Apr 2007
Location: Downeast Maine
Posts: 999
Default

Spa Hook Up Questions


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

Thanks
NateHanson is offline   Reply With Quote
Old 04-25-2007, 04:34 PM   #9
Electrician
 
Join Date: Nov 2005
Location: Winnipeg, Manitoba
Posts: 1,137
Default

Spa Hook Up Questions


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.
darren is offline   Reply With Quote
Old 04-25-2007, 05:33 PM   #10
Member
 
Join Date: Apr 2007
Location: Downeast Maine
Posts: 999
Default

Spa Hook Up Questions


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.

NateHanson is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aluminum-wired house, questions LMH Electrical 2 05-24-2009 03:06 AM
tiling questions - in middle of install mwill Flooring 8 12-11-2007 05:06 PM
questions about wood shake roof oraph Roofing/Siding 4 10-26-2006 05:10 AM
Main/Sub/Garage Gen Backup Questions crecore Electrical 9 04-17-2006 06:31 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.