Since the electrical equipment has its own lifespan which is inevitably limited, in order to save life they are always been placed time by time. As we all know that the electrical equipment has a 20 years’ lifespan which is presumed? The house owners are highly suggested to switch their electric wiring and other electrical equipment so as to keep the home safe. Electric wirings, switches and circuit breaker are not only to be replaced at the end of their expected lifespan. Under the circustance that electric problems occur, electrical equipment should be replaced right away.

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