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

ECN Shout Chat
Top Posters(30 Days)
Admin 16
Recent Posts
fuse rejectors
by gfretwell. 03/23/17 01:12 PM
Another Forum Update
by Admin. 03/22/17 03:04 PM
Dining room plugs
by watersparkfalls. 03/21/17 10:31 PM
TRUE POWER
by jraef. 03/21/17 09:13 PM
WEG CFW-11 Frequency Inverter
by jraef. 03/21/17 08:50 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,245 Are you busy
165,957 Re: Forum
160,481 Need opinion
Who's Online Now
0 registered members (), 57 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#79180 - 11/30/01 12:15 AM 10 ft tap rule  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
From my understanding, with this rule you don't need to fuse the feeders of a sub panel less than 10 ft. There is usually no extra lugs to tap off a main panel, so you have to fuse them with a breaker anyway. Am I thinking right?
(Just thought about the 25ft tap rule, have to look it up).


The Golden Rule - "The man with the gold makes the rule"

2017 / 2014 NEC & Related Books and Study Guides

#79181 - 12/01/01 02:34 PM Re: 10 ft tap rule  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,259
Fullerton, CA USA
There are so many variables in this question that it's hard to respond.
{240.21(B)(1)}If you have a conductor to a subpanel less than 10'long, that conductor does not have to be protected at its ampacity. It can be 1/10 of the ampacity of the OCPD that feeds it.
{408.16}The subpanel, however cannot be protected by a larger OCPD than its rating, so it would have to be protected by a main breaker or a OCPD in the main panel if the sub's rated at less than the main panel's OCPD.


#79182 - 12/05/01 10:01 PM Re: 10 ft tap rule  
bdaddyc1  Offline
Junior Member
Joined: Dec 2001
Posts: 4
aldav53, they do make panels that have a main breaker at the top for the feeds and have lugs at the botom of the panel to feed a sub panel which is a main lug panel sitting next to the main panel, so in a way the tap is just a continuation of the buss bars



Member Spotlight
AllClear
AllClear
Belmond Iowa US
Posts: 44
Joined: August 2005
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: 0.015s Queries: 14 (0.003s) Memory: 0.7499 MB (Peak: 0.8736 MB) Zlib enabled. Server Time: 2017-03-23 22:11:04 UTC