Author Topic: Square D cube device on service line?  (Read 314 times)
Cole D.
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Square D cube device on service line? « on: September 18, 2021, 04:20:07 PM » Author: Cole D.
When I was younger, we lived in a house built in 1992. It had a Square D 200 amp panel. Anyway, I remember where the service came into the house, that there was a cube shaped device that had the Square D logo on each side attached to the wires. It was yellow. Does anyone know what this was for? I have never seen another and can't find anything like to it. My guess is a surge suppressor.
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sox35
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Re: Square D cube device on service line? « Reply #1 on: September 18, 2021, 08:09:51 PM » Author: sox35
Hard to tell without a picture. I've certainly not come across anything similar here. I checked and the Square D brand is now owned by Schneider Electric, I checked their website and can't see anything, so I don't know  :-\
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Re: Square D cube device on service line? « Reply #2 on: September 18, 2021, 08:14:20 PM » Author: Morbid Angel
Sounds like a lightning arrester for the breaker panel.
Square D used to make cube shaped arresters that attached to the side of the panel.
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Re: Square D cube device on service line? « Reply #3 on: September 19, 2021, 12:13:21 PM » Author: Cole D.
Ah, found one:

Square D

But it sure seems like it was installed on the wires going into the weatherhead vs the panel.
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Re: Square D cube device on service line? « Reply #4 on: September 19, 2021, 12:19:21 PM » Author: Morbid Angel
The only cube shaped device installed on the wires going into the weatherhead that I can think of is a connector used by the power company to connect their triplex to the conductors from the meter.
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