The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by twh
Today at 06:28 AM
On Delay Relay with Auto Reset
by Potseal
Yesterday at 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 15
HotLine1 10
Texas_Ranger 9
Trumpy 8
sparkyinak 7
Who's Online
0 registered (), 203 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#66167 - 05/22/06 04:55 PM high leg services
jersey Offline
Member

Registered: 02/19/05
Posts: 13
Loc: 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.

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#66168 - 05/22/06 05:19 PM Re: high leg services
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
No Problem

Top
#66169 - 05/22/06 05:22 PM Re: high leg services
frenchelectrican Offline

Member

Registered: 02/06/03
Posts: 938
Loc: 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?)


Top
#66170 - 05/22/06 06:06 PM Re: high leg services
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: 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

Top
#66171 - 05/23/06 03:42 AM Re: high leg services
jersey Offline
Member

Registered: 02/19/05
Posts: 13
Loc: 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?

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

Member

Registered: 12/24/00
Posts: 4226
Loc: 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.

Top
#66173 - 05/23/06 05:35 AM Re: high leg services
Roger Offline
Member

Registered: 05/18/02
Posts: 1779
Loc: 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

Top
#66174 - 05/23/06 03:04 PM Re: high leg services
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: 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

Top
#66175 - 05/23/06 03:48 PM Re: high leg services
LarryC Offline
Member

Registered: 07/05/04
Posts: 776
Loc: 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.


LarryC

Top
#66176 - 05/23/06 06:15 PM Re: high leg services
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
Loc: 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

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals