Electrical Socket

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plug = a device with two or three metal pins attached to the end of a wire on a piece of electrical equipment and pushed into a socket for making an electrical connection  

terminal = the point at which a conductor from a component, device or network comes to an end.

pin = contact of a connector which make the electrical connection and complete the circuit

mounting box (block) = one of the multiple piece structures chiefly used for mounting of the electrical fixture to the building side

fuse = an electrical safety device that operates to provide overcurrent protection of an electrical circuit


Earth vs. Neutral vs. Line

The phase line is the one that carries current, the neutral line provides the return path to balance the flow of current, and finally earthing is purely used for safety purposes.

EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.