tx2step
Senior Member
- Location
- North Texas, DFW area
I'll be installing a new 120/240 single phase 400A service using 2 parallel sets of 3 each #250 Aluminum in 2" IMC. I think I can get the Aluminum in either THHN or XHHW. I haven't used any XHHW in a long time. I seem to remember that the XHHW insulation was more difficult to strip? I also seem to remember that the XHHW insulation was more prone to tearing?
1. What are the pro's and con's of using XHHW instead of THHN?
2. Is the aluminum usually a "compact conductor" with both insulation types?
3. I haven't used aluminum in a while -- other than using penetrox & torquing the lugs, is there anything else I should do to make sure I have trouble free mechanical terminations? Is it still recommended to brush the wire with a stainless steel brush before applying penetrox?
4. Any suggestions on how to do this the best, easiest & most cost effective way?
Thanks in advance
1. What are the pro's and con's of using XHHW instead of THHN?
2. Is the aluminum usually a "compact conductor" with both insulation types?
3. I haven't used aluminum in a while -- other than using penetrox & torquing the lugs, is there anything else I should do to make sure I have trouble free mechanical terminations? Is it still recommended to brush the wire with a stainless steel brush before applying penetrox?
4. Any suggestions on how to do this the best, easiest & most cost effective way?
Thanks in advance