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-   -   Proper splicing thnn/thwn (http://www.diychatroom.com/f18/proper-splicing-thnn-thwn-12265/)

dpt1 10-10-2007 05:40 AM

Proper splicing thnn/thwn
 
I'm running a 4 wire circuit to a new spa. The first 25 feet runs above ground in schd 80 pvc conduit from my 200 amp main to a junction box. At this point I plan on going underground in 1-1/2 pvc. How would I splice the #4str cu cable? Are split bolts OK? Compression splices? I have looked over quite a number of posts but have not found the information I need.

Recommendations are appreciated.

Speedy Petey 10-10-2007 06:01 AM

I use NSI Polaris Insul-Taps for anything over #8. WAY fast & easy and super clean.

http://www.dale-electric.com/detail?itemnumber=IT-4

Stubbie 10-10-2007 07:49 AM

Speedy showed these to me a few years back and they are the cats meow and worth the cost.

Only question I have is why are you splicing is it length of run and wire too short?

frenchelectrican 10-10-2007 01:23 PM

I just about used either split bolt or insluated taps but right now i am more on inslusated taps it work much faster than the split bolt methold useally about 1/4 of the time compared to old school methold [ split bolts] and much neater apparince as well

Merci, Marc

Andy in ATL 10-10-2007 05:45 PM

Polaris taps are the best for the DIYer... Very easy and self explanatory. Split bolts are just as effective and safe IF you know what kind of tape ( thick rubber splicing tape, and regular electrical tape) to buy and are careful making the splices.

220/221 10-11-2007 05:04 PM

Don't splice them.

A. Pull from the JB to the panel and from the JB to the spa.

B. If applicable, mount a GFCI disconnect instead of the JB and terminate them.

J. V. 10-12-2007 10:51 AM

This must be a monster of a spa. 1-1/2" conduit. What size conductors are you pulling?


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