To charge devices like MP3 players, tablet computers, and smartphones, you plug them into a computer or into an AC adapter that is then plugged into an electrical socket. Users of these devices are now able to plug the USB cable directly into a wall outlet equipped with two USB ports. Installing a USB socket is not difficult or expensive and can reduce energy consumption
You will need:
Step 1: Determine where you will be replacing a standard AC outlet with a USB wall socket. Turn off the power to the existing wall receptacle at the circuit breaker panel. Use the voltage tester to verify that power is not being supplied to the receptacle.
Step 2: Remove the receptacle faceplate by unscrewing the screws with the screwdriver.
Step 3: Use the screwdriver to unscrew the mounting bracket from wall. Pull the electrical box out from the wall, exposing the wiring. There should be three wires connected to the unit. The red or black wire is the live or “hot” wire that carries the electrical current. The white or silver wire is called the neutral wire and the green wire is referred to as the grounding wire.
Step 4: Unscrew the terminal screws located on the side of the electrical unit, loosening each one enough to pull out the wire it secures. Once all three wires have been removed, put the unit aside.
Step 5: Pick up the U socket and refer to the manufacturer instructions to connect each wire to the correct terminal on the unit. This usually involves wrapping the exposed wiring on one wire around the proper screw and tightening the screw with the screwdriver. This process is repeated to connect each of the remaining two wires to its relevant screw.
Step 6: Once the wires are connected, place the unit against the wall and use the screwdriver to connect the mounting screws to the plate on the wall.
Step 7: Turn on the power to the receptacle. Look for the indicator light on the installed unit. If it is glowing red, the neutral and live wires are switched. In this case, turn the power off to the receptacle and switch the connections of these wires. If the indicator light is not on, proceed to Step 8.
Step 8: Place the new faceplate over the unit and secure it by screwing in the provided screw.
Step 9: Test the two integrated USB charging sockets by plugging in a USB-powered device into each one. Verify that each device is charging.