Preventive maintenance of your electrical system is designed to provide four benefits:  
 
1.  It can avoid serious problems that lead to expensive repairs. For example, identifying a cracked outdoor cap (masthead) before water pours down the inside of the mast and rusts out the electrical panel will save you from a full service and panel replacement.
 
2.  It provides an increased degree of safety, such as identifying worn, and loose breakers and receptacles long before they become a fire hazard. As breakers and receptacles wear out, their working temperature slowly creeps upward. This is often not noticed until the plastic is melted around the device (as in our client's case) or when the fire department is investigating the fire.
 
3.  It ensures that you to get the maximum lifespan and value out of your current equipment.
Loose junction points are vulnerable to arcing and corrosion which, in turn, causes more arcing and corrosion shortening the number of years your panel will last. Tight, secure connections are impervious to this deterioration.
 
4.  Finally, as an electrical system deteriorates, hydro that you are paying for is lost and wasted resulting in higher hydro bills each month. A well maintained system saves you money.