ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
"Esoteric" countries and their wiring practices?
by Texas_Ranger. 04/20/19 07:00 PM
Norwegian power?
by Texas_Ranger. 04/20/19 06:27 PM
Welded Copper Connections
by gfretwell. 04/19/19 04:46 PM
Israel
by annemarie1. 04/18/19 02:35 PM
Water heater calculationsSo when I count calculati
by watersparkfalls. 04/13/19 12:43 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 6 guests, and 12 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Installing Panels and breakers #3735
08/27/01 11:48 PM
08/27/01 11:48 PM
A
Anonymous OP
Unregistered

I'm confused (I guess). A 200 AMP panel can handle what? Heck I'm lost now. I Thought I had it! Ok: You have 11 15 amp breaker's, can the 200 Amp panel handle this many breakers. Where does the 40 Amp, and 30 Amp breakers come in? How the heck do you wire a panel (In layman terms)? The reason I ask, is because I've had 3 different Journeyman tell me 3 different things. I'm assuming they do not know the calculations of how you know when to stop installing breakers etc.. LOST!!!!!!!!!!!!!!!!!!!!!

Work Gear for Electricians and the Trades
Re: Installing Panels and breakers #3736
08/28/01 06:33 AM
08/28/01 06:33 AM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,372
Foca Se;
it is somewhat a 'code loop', but it should start with a 'demand load calculation', look in the appendix at the examples... [Linked Image]

Re: Installing Panels and breakers #3737
08/28/01 06:49 AM
08/28/01 06:49 AM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
A 200 amp panel can handle 200 amps. However, this is not determined by adding up the breaker values.
Due to load diversity, it is very unlikely that each branch breaker will be loaded to its maximum value. As long as your calculated load does not exceed the panel rating, you are O.K. The same thing applies to Service Entrance conductors. A 200 amp service might, for practical resons, feed a 150 amp and 100 amp panel. As long as the calculated load does not exceed the Service Conductor rating.

Re: Installing Panels and breakers #3738
08/30/01 10:42 PM
08/30/01 10:42 PM
A
Anonymous OP
Unregistered

Quote
Originally posted by Redsy:
A 200 amp panel can handle 200 amps. However, this is not determined by adding up the breaker values.
Due to load diversity, it is very unlikely that each branch breaker will be loaded to its maximum value. As long as your calculated load does not exceed the panel rating, you are O.K. The same thing applies to Service Entrance conductors. A 200 amp service might, for practical resons, feed a 150 amp and 100 amp panel. As long as the calculated load does not exceed the Service Conductor rating.

Thank you for the info! This was what I figured. Thanks!

Re: Installing Panels and breakers #3739
08/31/01 11:28 AM
08/31/01 11:28 AM
W
WARREN1  Offline
Member
Joined: May 2001
Posts: 176
Greenville, SC, USA
Art. 220 of your NEC deals with the calculations. They are not that complex, however, you need to know how to do them corectly. Once you read through Art. 220, if you have questions, this BB and the great supportive people here will be glad to help.

Re: Installing Panels and breakers #3740
08/31/01 08:28 PM
08/31/01 08:28 PM
A
Anonymous OP
Unregistered

Quote
Originally posted by WARREN1:
Art. 220 of your NEC deals with the calculations. They are not that complex, however, you need to know how to do them corectly. Once you read through Art. 220, if you have questions, this BB and the great supportive people here will be glad to help.

Thanks!


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Posts: 165
Joined: March 2007
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
254,524 Are you busy
190,766 Re: Forum
180,487 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.020s Queries: 14 (0.004s) Memory: 0.9718 MB (Peak: 1.1176 MB) Zlib enabled. Server Time: 2019-04-22 10:19:32 UTC