The 3-pin plug is the standard way to provide power to a device in North American. A typical plug delivers a maximum of 120 volts at 15 amps. Each pin has a specific task. The bottom/round plug is the ground. This is the safety system that provides a safe path for the electricity to go to the earth if it gets somewhere it shouldn't. The larger flat terminal is the neutral connection which provides a path back to the distribution panel. The smaller flat slot is the "hot" connection which delivers the power to the device.
Things You'll Need
- Male 15-amp grounded connector
- 16/3-gauge stranded copper wire
- Wire strippers
Strip 1/4 of insulation off the end of each of the three wires with wire strippers.
Loosen the terminal screws on the male 15-amp grounded connector. Wrap the black wire around the hot (+) terminal and tighten it down with a screwdriver.
Wrap the white wire around the terminal for the neutral (-) connection and tighten down the terminal screw with a screw driver.
Wrap the green or bare wire around the terminal screw for the ground connection and tighten down with a screwdriver
Tips & Warnings
- Never work around wires which are live. Turn the power off at the source and confirm it is off before beginning work.
- Even a small amount of electricity can stop the human heart. Be extremely careful when working with electricity.
How to Wire a 7-Pin Trailer Plug
Detailed instructions on the installation and routing of all wiring for a traditional 7-wire trailer plug. Includes color codes for RV and...
How to Wire a Plug & Light
The light-and-plug combination is most commonly used for lamps, work lights and night lights. A switch can also be included in this...
How to Wire a 4 Pin Trailer Connector to a 7 Pin Connector
There is a lot of competition and confusion in the trailer world when it comes to connectors. In addition to several models...
How to Wire a Car Trailer in Australia
In Australia, all new trailer units registered after 1 January 1988 have required a minimum seven-pin connector that complies with Australian Standard...