How do you wire a 3 prong plug on a block heater?

To wire a 3-prong plug for a block heater, first ensure the heater is unplugged and safely handled. Connect the hot wire (usually black or red) to the brass terminal, the neutral wire (typically white) to the silver terminal, and the ground wire (green or bare copper) to the green terminal. Make sure all connections are secure, and the wires are stripped to the appropriate length before attaching them to the terminals. Finally, enclose the connections in a weatherproof housing if the plug will be exposed to the elements.