UF-B question

[pvanderlugt]

Hi guys, have a question....
Installing a hot tub, pulling the electric from a 100 Amp subpanel in the garage.
Plan is to run metallic flex conduit from the panel to the wall puncture, transit to 1 1/2 schedule 40 Pvc conduit we just buried 2ft deep and come out 6 ft from the hot tub, where we would tie into a GFCI panel/cutoff.. total run about 50 ft... needs to be 50 amp, so was planning on using 6/3 with ground....
2 questions, first would like to use one continuous cable for this, would a UF-B cable be acceptable for this....or what else is rated for indoor/ outdoor/in conduit?
2nd, can I run a regular 12/2 With ground wire thru this same conduit, for a GFCI outlet 6 feet from the tub?
Thanks
pete

 

[Terry D]

Anything outside the dwelling has to have a insulated ground for a pool or spa. You would have to use THWN conductors in your conduit underground to the spa

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[rlitman]

Running UF in LFMC and then schedule 40 PVC is just plain nuts, not to mention the fact that the unshielded ground is not code for the hot tub.

THWN/THHN is what you want. And no, you don't run another 12/2 UF in the same conduit. Size the cable to power all the expected loads and put a panel at at the tub end with two breakers. A 50A to run the spa and a 20A to run the outlet.

 

[Terry D]

Running UF in LFMC and then schedule 40 PVC is just plain nuts, not to mention the fact that the unshielded ground is not code for the hot tub.

THWN/THHN is what you want. And no, you don't run another 12/2 UF in the same conduit. Size the cable to power all the expected loads and put a panel at at the tub end with two breakers. A 50A to run the spa and a 20A to run the outlet.

I agree, most of the spa disconnects are a small sub panel with space for a couple of extra circuits. You already have a 1 1/2 conduit in the ground, wont be a problem pulling the correct sized feeders

 

[pvanderlugt]

Thanks for the help, THWN/THHN is what I will be looking for, will size appropriately... Can I presume that most wire is dual rated? Both THWN and ThHN? I see lots of THHN wire , but not to much THWN......
Thanks
Pete

 

[rlitman]

Yes. I can’t say I’ve seen THHN that wasn’t also THWN. THHN is a newer standard. There WAS THWN before THHN, but you probably won’t find that in a store.

 

[mike93lx]

Aluminum Xhhw could also be an option

 

[pvanderlugt]

Thanks all for the help....
Pete