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#213316 - 04/09/14 11:54 AM Overhead wire type?
petey_c Offline
Member

Registered: 01/30/05
Posts: 62
Loc: Miller Place, NY USA
I've been asked to bid on a job that would either require me to trench (rather not) or go overhead about 70'. I've never done this before. What type of wire should I use?
Pete

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#213317 - 04/09/14 12:51 PM Re: Overhead wire type? [Re: petey_c]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
'Triplex' or 'quadplex' dependent on the load.

Both are similar/exact of what the POCOs use for drops.

Check with your local zoning dept and AHJ for any local issues that may arise before you start
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#213318 - 04/09/14 03:42 PM Re: Overhead wire type? [Re: petey_c]
Tesla Offline
Member

Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
Stay with aluminum on O/H feeders.

Copper weighs a ton.

%%%

We take it for granted that you've installed O/H feeders before.

If not, there's some learning to be had.

1) Robust anchor points

2) Weather factors (wind, icing,...)

3) Getting up there and working safely (bucket truck?)

4) Crew size

5) Clearances (local rules dominate)

6) Building entry

7) Are you in a mandatory Underground zone?

(Prior installations can be deceptive. The AHJ can insist on underground (new) feeders based upon (recent) local zoning. Out my way, O/H feeders are prohibited. Only the Poco has O/H transmission lines.)

A mere seventy-feet of PVC would have me going underground -- not overhead -- unless the ground was brutal. I'd just rent a trencher.





Edited by Tesla (04/09/14 03:55 PM)
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#213319 - 04/09/14 07:49 PM Re: Overhead wire type? [Re: petey_c]
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA

As John said,

The POCO uses this and this for their overhead drops.

The triplex has code names named after molluscs and crustaceans. The quadruplex is named after breeds of horses laugh


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#213320 - 04/10/14 06:41 AM Re: Overhead wire type? [Re: petey_c]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Electure:
Thanks for the pics, they are worth 1000 words.

Most important is a chat with the local zoning & AHJ as Tesla also mentioned. O/H is allowed in some situations here, but unusual. Some fall in Rehab, some are 'temp' to restore site lighting, pending permanent repairs.


Edited by HotLine1 (04/10/14 06:45 AM)
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