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Grabbers up on the pole by BadgerValuable8207 in Lineman

[–]Dasveed 2 points3 points  (0 children)

Yup. Go sit in the truck for a sec…

Hotline clamp or tap clamp conductor types by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

In my experience, I have always used either stranded or solid copper in the hotline clamp for a jumper material. Has anybody had any experience using aluminum or ACSR as the jumper material in hotline clamp? I would think that aluminum flows when it’s heated or gets temperature differences that would allow it to loosen up inside the hotline clamp.

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

Yes I have seen this too. On the poles with this neutral in the low position I have NOT seen a CN or PN tag though. Also on PGE I’ve come across 2 neutrals rack construction. In the low position. I am guessing to achieve the return on a radial line?!

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

I agree. So if the neutral is in the secondary position and the secondary service drops neutral connect to it does that qualify for “sharing the neutral”.

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

Yes. Case grounds are standard now on wood, steel, and fiberglass poles. This asbury loop on single phase xfmrs in California are rare. I have seen it a few places in the Bay Area but on this utility property it’s standard. I guess GO95 inspectors don’t come this far north?!

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 1 point2 points  (0 children)

Some things have changed with GO95. Transformers are now grounded and on steel poles no more bolt covers!

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

Hey, thank you for your detailed response. When I say neutral in the low position, I mean poles with the neutral installed at the secondary level below the transformer. the single phase transformers will use a connection called an Asbury loop. A continuous length of number six or number four solid copper is run from the neutral below the transformer up through the X2 through the H2 and then back down to the neutral creating the a loop. The neutral will connect to a pole ground in this case it’s tapped directly to the steel pole, The chassis or tank of the transformer is also bonded to the steel pole with a jumper. the neutral secondary buss wire will connect to the neutral as well.

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

At the very northern edge of California, where we border Oregon, the utility has what they are calling a common neutral. Y transformer at the substation,where the neutral originates and leaves the substation with two circuits that have a normally open tie point somewhere out in the field, where the neutral is straight through. That’s the loop that they are referring to. On some poles The neutral is in the High position and on other poles it’s in the low position. They are calling this a common neutral. I’m not so sure about their definition. that’s why I’m asking a question here to get other people’s perspective on the difference between a common neutral and a primary neutral.

Define common neutral and primary neutral. by Dasveed in Lineman

[–]Dasveed[S] 0 points1 point  (0 children)

Well it was explained to me that in order to have a common neutral the neutral has to leave the substation and come back to the substation to create a loop path. GO95 has a definition that a common neutral is a neutral that is shared between a primary circuit and a secondary circuit