ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Childrens safety outlets
by dsk - 06/25/22 04:07 PM
AC-DC stage Ultra-Fast charger, how it's made?
by libellis - 06/25/22 12:17 PM
Your favourite food?
by NORCAL - 06/16/22 12:06 AM
Price action trading with RENKO
by gfretwell - 06/15/22 02:08 PM
Please Help Wiring DCDC Buck Converter
by gfretwell - 06/15/22 01:58 PM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
1 members (gfretwell), 35 guests, and 14 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Feb 2009
Posts: 3
R
Rhiney Offline OP
New Member
Hello there!
I've got a situation here where we are setting a 112.5kva480x 120/208 transformer on the roof of a building.
It will supply power to a 400Amp MCB-type panelboard below roughly 40'of conduit and wire away.
Are we required to have a fused disconnect near the transformer (word has it wthin 25')? Where in the code is this requirement if it exists?
Primary overcurrent protection is a 175amp circuit breaker.
Thanks much for any help

Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

Joined: Mar 2003
Posts: 849
Y
Member
240.21
Read which one applys in this section for you.
Also read Table 450.3(B).

Last edited by Yoopersup; 02/15/09 12:44 AM.
Joined: Feb 2009
Posts: 3
R
Rhiney Offline OP
New Member
Thanks much Yoopersup.
That cleared it right up for me . A fused disconnect within 25ft it is .


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
NickD
NickD
Amish Country, PA
Posts: 46
Joined: March 2013
Top Posters(30 Days)
Trumpy 7
triple 3
Asset 2
grich 2
Popular Topics(Views)
292,919 Are you busy
224,951 Re: Forum
210,380 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5