Why is there a little red light on top of my transformer only on at night

Nov 16, 2013 2 Replies

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An obvious guess would be that you simply cannot see the dim light in daylight. But in truth way more information is needed for any answer - what kind of transformer are you talking about, for example? I have guessed you are talking about an indicator light on a pad-mounted electrical utility street transformer, but I might have guessed wrong. Please clarify.

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