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#46921 - 01/05/05 04:01 PM Electrician vs. POCO Engineer
arseegee Offline

Registered: 01/28/02
Posts: 321
Loc: Statesboro, GA USA
I often wonder why I spend so much time learning code and theory when the poco gets to call the shots and it's normally against everything i have been taught. I deal with four different pocos in this region but 90% of our work is supplied by two here locally.

One of the companies is a dream to work with. I say I need 15KVA 480/277 3ph xfmr bank, they say no problem. Meet the engineer, sight the line, it's a done deal.

The other poco tells me what they're going to bring and how far they will bring it (and 99% what they deliever is undersized).

I called today and said I needed to get an order written on a a job so they could move forward on getting the pole and xfmrs set up. I requested a 120/208Y for a 400A UG service. They then told me it would have to be a 120/240 open delta. I said "hey I have plans that show a Y system and I priced it as a Y system blah blah blah".

My request got denied. I guess it might be penny pinching by management. I don't know. I was just wondering if you guys have to play these games too?

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#46922 - 01/05/05 05:14 PM Re: Electrician vs. POCO Engineer
Wirenuttt Offline

Registered: 11/10/02
Posts: 267
Loc: Massachusetts
Is it because that's all that's readily available to the POCO? DELTA. I know a lot of factories I see here are all DELTA and we had installed 480x480 delta to WYE transformers in the buildings.

[This message has been edited by Wirenuttt (edited 01-05-2005).]

#46923 - 01/05/05 06:01 PM Re: Electrician vs. POCO Engineer
Physis Offline

Registered: 12/28/04
Posts: 85
Loc: Burlingame, Ca. USA
I have almost never had to deal with this sort of thing so if I sound stupid it's because I am.

Does this amount to you having to get your own transformer to get the configuration you need?
Sam, San Francisco Bay Area

#46924 - 01/05/05 07:16 PM Re: Electrician vs. POCO Engineer
arseegee Offline

Registered: 01/28/02
Posts: 321
Loc: Statesboro, GA USA
Wirenutt, Three phase primaries run across the sight so no prob there. They said it did not "qualify" for a wye system. I think they are just trying to save a buck buy installing two xfmrs instead of three IMHO.

#46925 - 01/05/05 07:50 PM Re: Electrician vs. POCO Engineer
detubbs Offline

Registered: 11/18/04
Posts: 52
Loc: PA
around here if you say are a new construction or major remodel and say "hey i need this system or that system" both poco's will comply willingly. it seems the architects rule around here.


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