ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,899 Are you busy
166,776 Re: Forum
160,888 Need opinion
Who's Online Now
1 registered members (bigrockk), 71 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#23705 - 03/25/03 09:39 PM Panels  
LuminateME1  Offline
Member
Joined: Mar 2003
Posts: 22
Seattle,WA,USA
20/20 panels 24/40 panels--I have an idea of what this is all about, but would love to hear your clarification of panels. A 20/20 can handle 20 circuits, with 20 breakers only. Please .............join in


Work Gear for Electricians and the Trades

#23706 - 03/25/03 09:51 PM Re: Panels  
txsparky  Offline
Member
Joined: May 2001
Posts: 552
Magnolia,.Texas U.S.A.
A 20/20 panel can use only 20 full size breakers.A 20/40 can use 20 full size,40 minis or any combination in between.You are not to exceed the 40 breaker maximum by adding piggyback style breakers.

[This message has been edited by txsparky (edited 03-25-2003).]


Donnie

#23707 - 03/25/03 09:56 PM Re: Panels  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,803
Brick, NJ USA
The way I understand it:
20/20 means that the panel is built & listed for 20 branch circuit poles. (20 single poles or 10 double poles, or any combo to 20)
This also indicates that "full size breakers are "only" allowed in this panel.

24/40 means 24 full size breakers (24 poles)
or by installing listed "twins" or "piggy back" a maximum of 40 poles. The panel buss is supposed to be manufactured with a means to prevent the insertion of "twins" in excess of the "listed" quantity.

John


John

#23708 - 03/25/03 11:39 PM Re: Panels  
LK  Offline
Member
Joined: Jan 2003
Posts: 1,429
New Jersey
How about C-H Panel 100Amp 30 space has anyone used this panel.



Member Spotlight
MarkC10
MarkC10
CA, Inland Empire
Posts: 43
Joined: September 2013
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 15 (0.003s) Memory: 0.7574 MB (Peak: 0.8897 MB) Zlib enabled. Server Time: 2017-03-30 22:26:54 UTC