Another sub panel question

Reply

  #1  
Old 05-11-05, 11:07 AM
Don W's Avatar
Member
Thread Starter
Join Date: May 2004
Location: Central IL.
Posts: 32
Another sub panel question

I installed a sub in the basement and posed a question earlier, thanks to all who responded. I ran three outlets from a 20 amp breaker in the sub and connected my dehumidifier to one of the outlets. I checked this morning and the dehumidifier wasn't running. A check at the sub produced 45 volts on one leg and 120 volts on the other. I reset the 60 amp breaker at the main that feeds the sub and checked again showing 120 volts on each leg of the sub. What happened? Was it a partial trip of the 60 amp breaker? Why didn't the 20 amp breaker feeding the outlet trip first? Are there deeper serious issues present? The dehumidifier has ran for about 3 weeks on a circuit not connedted to the sub and has run fine. Being a new install on the sub makes me wary that something is amiss.
 
Sponsored Links
  #2  
Old 05-11-05, 12:49 PM
Forum Topic Moderator
Join Date: Feb 2005
Location: Near Lansing, Michigan
Posts: 10,537
Turn the power to the subpanel off and check to make sure all of the sub panel feeder wires are tightly clamped into their lugs at both the sub panel and at the 60A breaker in the main panel. Check the neutral wire connections too.

Be sure to de-energize the lugs before sticking an allen wrench in there!
 

Last edited by ibpooks; 05-11-05 at 03:49 PM.
  #3  
Old 05-11-05, 02:19 PM
Member
Join Date: Sep 2000
Location: United States
Posts: 18,497
Make sure that the 60-amp breaker in the main panel is the correct make and model for the panel, make sure it is well seated, and make sure that the buses where it connects are in good shape.
 
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