ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
110.26
by gfretwell. 02/18/18 12:14 AM
2018 Code Explained
by Potseal. 02/14/18 03:16 PM
Air Compressor feeder conductor sizing
by Potseal. 02/14/18 03:11 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 9 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
high leg services #66167
05/22/06 06:55 PM
05/22/06 06:55 PM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
I am working in a meat packing wharehouse It has a delta high leg service. 400 amp w/ two seperate 200 amp panels. The customer wants another 200 amp panel (mostly 120v loads) In your experiance would the power company allow a single phase additional panel (not using the high leg)The original service loaded.

Work Gear for Electricians and the Trades
Re: high leg services #66168
05/22/06 07:19 PM
05/22/06 07:19 PM
Y
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 840
Michigan
No Problem

Re: high leg services #66169
05/22/06 07:22 PM
05/22/06 07:22 PM
F
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
one thing about delta service some poco will allow to increase the trasformer " can " capaity but please do check with the POCO first before you add more load on this set up

some time they will only increase to match the exsting main breaker rating only nothing more

this what my poco told me with exsting delta services they will only increase to match main breaker rating if more than the main breaker rating .

My POCO will ask you to convert to wye system after pretty big upgrading on the system or get a POCO engineer approvel for specal useage

so just check with them ahead of time so they can have time to prepared to change the cans or on ground transformer box as needed

Merci, Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Re: high leg services #66170
05/22/06 08:06 PM
05/22/06 08:06 PM
R
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Would the owner consider springing for a delta to wye 120/208V 75 KVA dry type transformer to feed this new panel?

If there is no need for a special K rated or copper winding transformer the cost would not be to bad.


Roger

Re: high leg services #66171
05/23/06 05:42 AM
05/23/06 05:42 AM
J
jersey  Offline OP
Member
Joined: Feb 2005
Posts: 13
Hopatcong N.J. 07843
Thanks for the response but how would that fix the load problem? Do you mean a new trans off the existing service or a trans off a new service?

Re: high leg services #66172
05/23/06 07:05 AM
05/23/06 07:05 AM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,264
Fullerton, CA USA
If you are going to increase the load, and the present service is loaded to capacity, you'll simply have to replace the service with one that has enough capacity.

Overloading a circuit is overloading a circuit, be it a 15Amp branch circuit, or a 4000 amp service.

Re: high leg services #66173
05/23/06 07:35 AM
05/23/06 07:35 AM
R
Roger  Offline
Member
Joined: May 2002
Posts: 1,716
N.C.
Jersey, you didn't mention there was a load problem, the number of panels or face value of OCPD's wouldn't change the actual load.

With that said, if there is infact a load problem, I agree with Marc and Electure, you will need to contact the POCO and most likely provide a new service.

Roger

Re: high leg services #66174
05/23/06 05:04 PM
05/23/06 05:04 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 6,926
Brick, NJ USA
Jersey:
Welcome to the forums, from another Jersey Guy!! Are we becoming the silent majority here???

OK, first thing you need is a load calc. Then you have to discuss your situation with the POCO. JCP&L, or PSE&G

If you need a little help, send me an e-mail; my address is in my profile

John


John
Re: high leg services #66175
05/23/06 05:48 PM
05/23/06 05:48 PM
L
LarryC  Offline
Member
Joined: Jul 2004
Posts: 783
Winchester, NH, US
Welcome to the forums, from another Jersey Guy!! Are we becoming the silent majority here???

Silent isn't the word I would use. [Linked Image]


LarryC

Re: high leg services #66176
05/23/06 08:15 PM
05/23/06 08:15 PM
E
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
Or.... Contact your POCO, and get a second set of tranformers, and second service.

The second one in 208 wye... Not an uncommon request in my area.


Mark Heller
"Well - I oughta....." -Jackie Gleason

Featured:

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

 

Member Spotlight
Vlado
Vlado
Croatia
Posts: 28
Joined: February 2011
Show All Member Profiles 
Top Posters(30 Days)
Admin 9
Popular Topics(Views)
244,019 Are you busy
181,014 Re: Forum
171,262 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.021s Queries: 14 (0.003s) Memory: 1.0093 MB (Peak: 1.1839 MB) Zlib enabled. Server Time: 2018-02-19 11:51:59 UTC