question for poco guys -

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brantmacga

brantmacga

Señor Member
Location
Georgia
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Former Child
i saw something slightly unusual today; just wondering if any poco guys have some input.


driving down a highway; to my left, a typical 3 phase system (looked like 7200v setup).

on my right, a single phase system. these aren't too unusual way out in the country, but this was in the city.

a couple of miles ahead, they merged to one set of poles. 3 phase on bottom, single phase on top, and they went on like that as far as i drove.

what would be the purpose of this? just curious.
 
It is difficult without seeing the circuits. This could be a 15 kV class 3? wye main line circuit and the 1? line could be another voltage like 34.5 KV, 23 kV, 4.16 kV or even a series street lighting circuit. Normally, we place the higher voltage on top where two voltages are on the same pole. We use very little 34.5 KV and 23 kV for distribution but it is done. :smile:
 
charlie said:
Dereck, laterals are underground and drops are overhead. :smile:
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You yankees got it all backwards.:D

Seriously it sounded to me like a rural 13.8 or 7.2 latteral, and we southerners run dem overhead, and drops underground.:grin: No wonder you yankees cannot win a football game, you don't know the difference between a latteral above ground, from a fumble when you drop it on the ground.
 
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dereckbc said:
Sounds like a service latteral.
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not a lateral (overhead); but it would've been at least a 7 mile drop, because that's how far i followed it before turning off that particular road.


no transformers, no lights, just two conductors by their lonesome traveling down the road.


i was just curious.
 
charlie said:
It is difficult without seeing the circuits. This could be a 15 kV class 3? wye main line circuit and the 1? line could be another voltage like 34.5 KV, 23 kV, 4.16 kV or even a series street lighting circuit. Normally, we place the higher voltage on top where two voltages are on the same pole. We use very little 34.5 KV and 23 kV for distribution but it is done. :smile:
Click to expand...


i was thinking street lights too, but it didn't make a pit stop at anything.

i wonder if it was going to some type of city owned plant?

the three phase looked to be 15kv just based on height alone (i'm really just guessing, but it was slightly higher than 7.2kv line). the single phase was on the same insulators so i'm not sure if it was a higher voltage or not.
 
Laterals, drops, and pri-meters

Laterals, drops, and pri-meters

dereckbc said:
. . . No wonder you Yankees cannot win a football game, you don't know the difference between a lateral above ground, from a fumble when you drop it on the ground.
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OUCH!!! That really hurt, especially since the Colts dropped out in the first round of the playoffs. :mad: :) :D


brantmacga said:
. . . I wonder if it was going to some type of city owned plant? . .
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I suppose it could be behind a primary meter and city owned primary. We normally under-build customer owned conductors on our poles. :confused:
 
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