Hello, newbie here. Im trying to gather wiring for my outdoor spa.Iknow I need 6 gauge wire. I was gonna get 6-3 from home depot to run from my 220 service to a junction box where the wire will go outside. This is where im confused. I believe I need an insulated ground outside which forces me to get 4 seperate wires to go from tub to GFCI box then to the junction box mentioned above. I wanted to get the underground cable and just nail to the underside of my deck to get to the tub but it doesnt have an insulated ground. I cant bury in conduit because the deck is only a foot off the ground but I can get in there to nail to joists. Im so confused, any help would be great.



thanks

 

Welcome to the forums.

Yes... the ground needs to be insulated outside.

You could fasten conduit (PVC) to the bottom of the deck. That would be considered protected and would not need to be buried.

A picture of your deck there would be helpful too. http://www.doityourself.com/forum/el...rt-images.html

 

If you can staple you should be able to hang conduit under the deck. Four #6 will fit in 3/4" pvc, but 1" will make an easier pull.

 

The junction box coming from the house will be under a 3 season room. Thats where the regular 6-3 will end. Do I have to run conduit from that box to where it actually goes outside. Under the room is just dirt but its covered from rain and sun.

 

Yes, all of the exterior portion of the run should be individual conductors in conduit. Liquidtight flexible exterior conduit is an option if running solid pipe under the floor is a prohibitively difficult exercise, however I would use at least 1" in that case. Switch to rigid PVC conduit for the underground portion, ideally using a pull box or condulet fitting. You can switch to liquidtight again for the final connection through the skirting to the tub power box.

 

Can I run flexible conduit from the junction box under that room to the GFCI box and again from the GFCI box to the tub and just skip the PVC conduit?Im having issues putting pfotos on here

 

http://www.doityourself.com/forum/li...rt-images.html

 

Maybe -- some areas have a length restriction of 6' of liquidtight. You would have to clear it with your inspector. Also LT cannot go underground, not sure when you said underground cable if you actually meant it was going underground or just underground rated. If the LT is just strapped to the underside of the decking it would be a legal install provided your region allows lengths greater than 6'.

 

Yes it would be under my deck joists,The conduit would be about 20' to the GFCI box then another 10' to the tub.

 

It will be easier to pul, the conductors into the rigid pvc versus the flex.