Sub panel

Reply

  #1  
Old 11-03-02, 03:28 PM
Member
Thread Starter
Join Date: Nov 2002
Location: Mass
Posts: 151
Received 0 Votes on 0 Posts
Sub panel

I am planning to install a sub-panel in my garage in the near future. Would it be possible to use the non-used 40 amp range breaker for this? What gauge wire should i run 8/3 10/3?? does it have to be in conduit or can i run NM sheathed from the main panel to the sub and at the sub from ceiling to panel in conduit?? like 4 FT. or so. The garage is attached via breezway. I live in MA.
 
Sponsored Links
  #2  
Old 11-03-02, 05:07 PM
Member
Join Date: Sep 2000
Location: United States
Posts: 18,497
Received 0 Votes on 0 Posts
Yes, you can use the range breaker. Use 8/3. In most areas, you need no conduit as long as the cable is not exposed to physical damage. But you'll need to check locally for the conduit rules. Call your building department. While you're talking to them, describe the relationship of the house and garage and ask them if they consider this an "attached" or "detached" garage. If detached, you'll need grounding rods. NM can't be run where subject to moisture -- whether or not in conduit.
 
  #3  
Old 11-04-02, 05:53 PM
Member
Thread Starter
Join Date: Nov 2002
Location: Mass
Posts: 151
Received 0 Votes on 0 Posts
sub panel

Also, what is the calculation for total # of breakers (amps) in the
Sub, in relationship to the sub main breaker like 60 amps?
 
  #4  
Old 11-04-02, 05:59 PM
Member
Join Date: Sep 2000
Location: United States
Posts: 18,497
Received 0 Votes on 0 Posts
There is no such calculation. Just estimate the load and convince yourself that you won't exceed the 40-amp breaker under any reasonable situation (you don't need to assume that everything will be on at the same time). This calculation is independent of how many breakers are in the subpanel or what their sizes are.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


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