We had massive electrical problems back in Feb and had to replace our entire circuit box and outside lines going up to the triplex that hooks us into electric company. We were darn lucky the whole house did not burn down. Anyway the electrician installed a protector that junctions right into the circuit breaker box so the whole house is protected. If it is storming and I am home I will go unplug the longarm but don't usually think to unplug my Bernina.