(01st),each family must have some essential electrician appliances,like examines the screwdriver and so on.also musthave has suits each kind of specification fuse which the domesticelectric appliances uses to have and the fuse.(02nd),each household number must be loaded with with theelectric instrument in front of always insures,after the electricinstrument should be loaded with the total knife switch and theleakage protection switch.(03rd),in any situation strictly is durable the copper,the ironwire replaces the fuse.fuse the size certainly wants and useselectricity when the capacity match.replacement fuse must tear offthe porcelain lid replacement,does not have directly to build in theporcelain box ties the insurance,must not (not pull open knifeswitch) in the charged situation to replace the fuse.