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Buzzing change over

lyledunn

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. 

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    Should also add that coil voltage ok and as best as could be managed without complete dismantling, inners cleaned and blown out.

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    Should also add that coil voltage ok and as best as could be managed without complete dismantling, inners cleaned and blown out.

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