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security lights shorting circuit

1986 Views 10 Replies 7 Participants Last post by  mrmike
I just finished a crawlspace remediation and got a call that the sump pumps may be have tripped a breaker....so I checked it out tonight and when resetting the breaker it buzzes then within approximately one second it trips. The onsite maintenance guy said the power supply in the high power exterior building lighting sometimes shorts out.

question: being as they look like a 175w sodium wall mount, will the power supply's some times short out (high current draw)? Don't worry, I don't fix this kind of stuff, but I thought when they go bad you'll have an open or non-igniting light; what is the likely cause?
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Doesn't a short cause the breaker to trip in more like 1/1000th of a second? If it takes a second before tripping, that indicates an overloaded circuit doesn't it? Not a short.
Usually, but not necessarily. Depends on the length of the run, quality of intervening connections and so forth. And don't forget, the term "short" gets abused more than a remodeler looking for work on CL. :whistling
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