Is it possible that my electrical supply seems weaker than normal, and why?

Lights being dim­mer than usu­al, hot plates slow to cook, and motors fail­ing to start are all indica­tive that there might be a prob­lem in the high volt­age sys­tem. If you observe any of these in your home, turn appli­ances off and unplug them. Leave a min­i­mum of lights on (such as a flu­o­res­cent) and call YEC.