Dec 02, 2020 at 06:04 PM Author: Desultory
Never seen an installation like this before. 3 separate single phase vacuum switches, usually a 3phase gang operated switch is used. All 3 were made by ABB.

"What the hell is a gigawatt?!" - Michael J Fox Back to the Future

"Now I need your help to get back to the year 1985!" - Michael J Fox Back to the Future

Dec 02, 2020 at 06:06 PM Author: CreeRSW207
Quote from Wireman on Dec 02, 2020 at 06:04 PM Never seen an installation like this before. 3 separate single phase vacuum switches, usually a 3phase gang operated switch is used. All 3 were made by ABB. These are becoming more and more common.

Collector of any streetlight type, preferably HID.
Lights I own: Line Material Unistyle 250, AEL Autobahn ATBS- 20w.
Power Company: Eversource
One of few members from the Northeastern US
Im proud to say my town is still HID!
Westinghouse Lifeguard Disease is nothing to fear. Im proud to have it!

Dec 02, 2020 at 06:12 PM Author: Desultory
Quote from CreeRSW207 on Dec 02, 2020 at 06:06 PM These are becoming more and more common. Really!? Probably because it's easier to replace 1 switch that's bad instead of an entire 3phase gang switch.

"What the hell is a gigawatt?!" - Michael J Fox Back to the Future

"Now I need your help to get back to the year 1985!" - Michael J Fox Back to the Future

Dec 02, 2020 at 06:15 PM Author: CreeRSW207
Quote from Wireman on Dec 02, 2020 at 06:12 PM Really!? Probably because it's easier to replace 1 switch that's bad instead of an entire 3phase gang switch. They probably use the same mentality as they do with transformers, bank 3 since its easier to replace 1 small unit instead of 1 large.

Collector of any streetlight type, preferably HID.
Lights I own: Line Material Unistyle 250, AEL Autobahn ATBS- 20w.
Power Company: Eversource
One of few members from the Northeastern US
Im proud to say my town is still HID!
Westinghouse Lifeguard Disease is nothing to fear. Im proud to have it!

Dec 02, 2020 at 06:19 PM Author: Desultory
Quote from CreeRSW207 on Dec 02, 2020 at 06:15 PM They probably use the same mentality as they do with transformers, bank 3 since its easier to replace 1 small unit instead of 1 large. Yeah that and in the case of these switches if there's trouble on only 1 line only that switch will act. The other 2 won't be affected and a lot more people won't lose their lights.

"What the hell is a gigawatt?!" - Michael J Fox Back to the Future

"Now I need your help to get back to the year 1985!" - Michael J Fox Back to the Future