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Buzzing change over

A fairly loud buzzing noise has recently appeared in a 200A changeover switch. Everything checked for tightness. Assumption is that it is one of the coils but I am unsure if this is an issue of concern. 

Parents
  • Love it Mike, a “gentle hippy trance hummmm”! Somehow I don’t quite see you with the long hair, sunglasses and odd looking smoking implements, at least not during your scout master days….there again…

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  • Love it Mike, a “gentle hippy trance hummmm”! Somehow I don’t quite see you with the long hair, sunglasses and odd looking smoking implements, at least not during your scout master days….there again…

Children
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