ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Do You Wrap Your Receptacles?
by gfretwell - 02/20/24 10:48 PM
Cable Chase Code Requirement
by renosteinke - 02/16/24 07:00 PM
Do we need grounding?
by gfretwell - 02/16/24 10:37 AM
Cordless Tools: The Obvious Question
by gfretwell - 02/08/24 07:28 AM
Is this really a thing
by renosteinke - 02/07/24 01:15 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
0 members (), 31 guests, and 19 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#4801 10/18/01 11:02 AM
Joined: Oct 2001
Posts: 1
A
andy19 Offline OP
Junior Member
I HAVE A 200 AMP 120/240V 1PHASE M/L/O LOAD CENTER PANEL IN A MODULAR SCHOOL BUILDING
THAT THE MANUFACTURER INSTALLED 3 -15KW 240V
1 PHASE IN. TOTAL LOAD OF 198 AMPS WITH BLOWER MOTORS. I'M PLANNING ON FEEDING THIS SUB PANEL WITH A 200 AMP FUSE DISCONNECT. anything IN THE NEC THAT SAYS I CAN'T DO THIS? I'VE ASKED SERVERAL PEOPLE AND THEY SAID I COULDN'T BUT COULDN'T GIVE ME A CODE REFERENCE.
THANKS FOR YOUR HELP
ANDY

[This message has been edited by andy19 (edited 10-18-2001).]

#4802 10/19/01 07:40 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
Andy,

The best I can say is "maybe."

See 220-15, the exception seems to offer some wiggle room. If all units will be on at the same time, what about the lights & receptacle load, are they on another feeder? Seems to me that there is not enough capacity. To apply the exception, you'll need permission from the AHJ.

Tom


Few things are harder to put up with than the annoyance of a good example.
#4803 10/20/01 02:08 PM
Joined: Aug 2001
Posts: 142
B
Member
Andy:
Wouldnt this be considered a continuous load?
210.20(A). So if your load is 198 amps with that kind of load the conductors could also be used as heaters (?)
Just by that the rating should be 247 amps or 125% of the load + the non-continuous load. Also art. 424.3(B) Branch circuits, fixed electric space heating equipment, shall be rated at 125 % of total load and motors.
I would think you need a bigger panel.

#4804 10/20/01 08:10 PM
Joined: Dec 2000
Posts: 4,294
Member
I think I'd contact whoever it was that supplied this piece of "art", and have them give you something that is Code compliant.
If it's going in a school, the school district should at least have enough clout to get something safe from them.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
 
* * * * * * *

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

 

Member Spotlight
sbi
sbi
indiana
Posts: 47
Joined: March 2008
Top Posters(30 Days)
maxecn 5
Admin 3
Popular Topics(Views)
317,896 Are you busy
242,722 Re: Forum
226,826 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5