From the shore power inlet, 30-amp conductors lead to the boat's AC panel board, from which power is distributed through the boat by wiring systems called branch circuits. The plugs and connectors from one system will not fit into the other system. To find out what you have in your boat, read the electrical rating on the face of the inlet. Nomenclature Understanding the proper terms for electrical products is necessary to discuss your shore power system. Following are commonly used terms.
Power goes into the inlet.
The inlet has male blades similar to a plug. A connector is the device at the end of a shore power cord set which makes the electrical connection to the inlet. A connector delivers power. The contacts are recessed so a person cannot touch the live parts and get a shock. A cord set must never have plugs on both ends, because if one end is energized, the blades on the other end will become live.