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#7677 - 02/15/02 09:09 AM Fifth terminal
electrician02125 Offline
Member

Registered: 02/01/01
Posts: 90
Can someone out there explain to me the term fifth terminal with respect to meter sockets.

Why would you need it or not ?

Depending on the month around my neck of the woods, you may need it or not.

I am in the maintenance end of the trade and
try to stay current on residential as much as possible.

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#7678 - 02/15/02 10:29 AM Re: Fifth terminal
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Our utility (PECO) requires a 5th jaw to meter an existing 120 volt service, and also to meter a single phase 208/120 service supplied from a 3 phase system. Although I don't know how it functions, according to our utility co. drawings, it provides a neutral connection to the meter. Your utility company should have an installation guide book which will include drawings.
Maybe someone else here can explain the function.

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#7679 - 02/16/02 12:16 PM Re: Fifth terminal
CanadianSparky Offline
Member

Registered: 03/05/01
Posts: 86
Loc: Alberta Canada
We use the fifth jaw for digital meters its a piece of #10 connected directly to the neutral.

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#7680 - 02/20/02 11:40 AM Re: Fifth terminal
motor-T Offline
Member

Registered: 11/10/01
Posts: 293
Loc: Girard, Ohio, USA
According to my PoCo on single phase its for a 120V pick-up for some meters they use, I didnt pursue whether thay were digital on not could well be.

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