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Old 12-07-2016, 07:20 PM   #1
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Default XO Panels

Wondering when SQ D changed from XO to QO I was thinking late 50's I have one to change out
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Old 12-07-2016, 09:09 PM   #2
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I have one in my house. When I upgrade I intend on selling those breakers, they still go for some decent money.
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Old 12-07-2016, 10:37 PM   #3
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I think the QO series arrived around 1955.
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