HVAC power wiring


  #1  
Old 05-23-15, 10:28 PM
C
Member
Thread Starter
Join Date: May 2015
Posts: 1
Upvotes: 0
Received 0 Upvotes on 0 Posts
HVAC power wiring

Hello,first time posting on this site.Thanks in advance for all replies.

I'll start by explaining what i have done.I've replaced my heating unit with a new one from one side of the attick to the other and now i need to extend my power feed about 20 feet.The old unit was feed by a 2 gauge aluminum wire with a 90 amp breaker,but the new unit requires 2 feeds of 30 and 60 amps.What is the best way to extend the power feed?
 
  #2  
Old 05-23-15, 11:08 PM
F
Member
Join Date: Mar 2006
Location: Wet side of Washington state.
Posts: 16,321
Received 38 Upvotes on 30 Posts
Welcome to the best DIY forum on the Internet.

There are several possible ways to extend the power, perhaps one of the best would be to use a power block connection mounted in a steel cabinet. This is one example. Others will have a more in-depth answer.

PB1042

I would use copper conductors with type THHN insulation, #6 for the 60 ampere and #10 for the thirty ampere. You need to run these conductors through conduit. Understand that you may NOT connect the copper and aluminum conductors directly to each other.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: