breaker replacement/tightening

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Old 05-29-15, 06:15 AM
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breaker replacement/tightening

Should the main breaker be closed when replacing a circuit breaker?

Is turning off the breaker your replacing and having the new one turned off when snapping to the bus bar sufficient?

How about tightening the screws on breakers, is it safe to do so with only the breakers you are tightening turned off?
 
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Old 05-29-15, 06:39 AM
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Unless this is an old 60 amp service or 240v side of a split bus with no main breaker you should always turn off the main breaker.
 
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