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

Topic Options
Rate This Topic
#165606 - 07/01/07 10:13 AM 2000 Amp Service
Admin Offline

Administrator
Member
Registered: 10/07/00
Posts: 3417
Loc: NY, USA
submitted by Alan Nadon:
Quote:
This is the C.T. (current transformer) and metering for a new 2,000 amp service. Underground feed.



Quote:
This is the second picture inside the C.T. cabinet. The only wires are the utility company supply lines nothing else has been installed.



Quote:
This is a close up of where the arc fault from the wires cut a hole in the bottom corner of the C.T. cabinet when someone mistakenly closed the links at the transformer.

Bad news .......cabinet damaged
Good News......... nobody got hurt.

Have a great weekend and fourth of July.

Alan Nadon

Top
Tools for Electricians:
#165622 - 07/01/07 04:04 PM Re: 2000 Amp Service [Re: Admin]
CTwireman Offline
Member
Registered: 02/07/02
Posts: 840
Loc: Connecticut, USA
I bet the line mechanic got a good scare from that one!
_________________________
Peter
Top
#165625 - 07/01/07 04:39 PM Re: 2000 Amp Service [Re: CTwireman]
LoneGunman Offline
Member
Registered: 10/02/05
Posts: 141
Loc: Florida
In my opinion you should not leave untaped wires if one side can possibly be energized.
Top
#165643 - 07/02/07 03:57 AM Re: 2000 Amp Service [Re: LoneGunman]
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2148
Loc: IL
How do you get 2000A in a single 4"? Why is there blue tape on the identified conductor?
Don
_________________________
Don(resqcapt19)
Top
#165657 - 07/02/07 08:11 AM Re: 2000 Amp Service [Re: resqcapt19]
Alan Nadon Offline
Member
Registered: 03/10/05
Posts: 399
Loc: Elkhart, IN. USA
The identified conductor is being used as a phase conductor. The blue tape is to keep someone from thinking that it is the grounded/neutral leg.
The equipment inside (not installed) will be rated for 2,000 amp. The POCO sizes their conductors for the expected load.
The lineman is probably still seeing spots.

_________________________
Alan--
If it was easy, anyone could do it.
Top
#165658 - 07/02/07 10:30 AM Re: 2000 Amp Service [Re: Alan Nadon]
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2148
Loc: IL
Alan,
It looks like there are 3 phase conductors and an identified condutor. Why would the identified conductor have to be used as a phase conductor?
Don
_________________________
Don(resqcapt19)
Top
#165664 - 07/02/07 12:54 PM Re: 2000 Amp Service [Re: resqcapt19]
scameron81 Offline
Member
Registered: 02/24/04
Posts: 75
Loc: Healdsburg, ca, USA
It looks like the black conductor in the back is smaller than the other three. That is probably why they used the striped one as the 3rd leg. It looks like they used their standard single phase UG triplex and threw in another smaller conductor for the grounded conductor.
Top
#165696 - 07/03/07 10:26 AM Re: 2000 Amp Service [Re: scameron81]
EV607797 Offline
Member
Registered: 10/25/06
Posts: 744
Loc: Fredericksburg, VA, USA
That's what they do around here too. Our local power company uses 1/0 aluminum for up to a 400 amp service, so I am not surprised to see such small conductors in this application.
_________________________
---Ed---

"But the guy at Home Depot said it would work."
Top
#165702 - 07/03/07 12:40 PM Re: 2000 Amp Service [Re: EV607797]
frenchelectrican Offline
Member
Registered: 02/06/03
Posts: 939
Loc: Wi/ Paris France { France for ...
it pretty much sum up with UG wires our POCO do pretty much the same as well here we used 1/0 AL for 400 amp service but go 600 amp they used paralled 1/0's and majorty of them used bundled triplex and they useally dont stock not too many quadplex unless unuseally large service.
_________________________
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Top

Member Spotlight
Member Since: 12/24/00
Posts: 4259
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 54 Guests and 8 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

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