Double-Insulated Power Plug Replacement

Double-Insulated Power Plugs

• Double-insulated power plugs are used with appliances instead of standard three-prong grounded plugs. The double-insulated plugs have two prongs, one larger than the other, indicating that it is polarized. An inner cover between the exterior of the plugs and the wires prevents loose wires or electrical shorts from shocking you when you handle the plug.

When to Replace a Plug

• Appearance, convenience and safety play roles in determining when to replace a double-insulated plug. The plug might need replacement to match a cord of a different color or switch to a low-profile plug for use in narrow spaces. Cracked or broken plugs require replacement because they pose a fire hazard.

Replacing Plugs

• Replacing a double-insulated plug is easier to do than traditional grounded plugs. There are only two wires to connect. The white wire fits under the silver screw inside the new plug, and the hot black wire is under the brass screw. Close the replacement plug to clamp the wires into place.

What Not to Do

• When replacing a double-insulated plug, there are some problems that might occur. Never switch the placement of the wires for a polarized plug, with one prong longer than the other. The white wire attaches to the screw under the longer prong, and the black wire corresponds to the shorter prong. Do not try to create a false sense of security by replacing a double-insulated plug with a grounded plug. There is no ground wire in the cord, and your appliance will not be grounded.