If your home was built in the early to mid 1900’s the method of wiring at that time was knob and tube, cloth, or shielded BX wiring. This type of wiring does not provide an electrical ground wire as today’s method of wiring does

 Over the years of use and abuse this outdated wiring becomes less than safe. This circuit above was extended to the washer and dryer as well, a modification that created a potential over load.  Wiring done in that era also lacked the codes of today. Replacing wiring depicted in the image above is highly recommended.

 If you have wiring that looks similar to this you should consult a licensed electrical contractor for an overview of your electrical system. For all your electrical needs contact your licensed Philadelphia electricians Lauterborn Electric. Click Images to Enlarge.