An electrical receptacle assembly comprising: a housing having a first compartment and a second compartment removably securable to each other by means of fasteners, said first compartment having an operative sidewall having a first opening and an operative base having a second opening, said first opening having hourly graduations with a corresponding first securing formation for each graduation on the operative front face of the sidewall facing the outside of said first compartment; and the electrical receptacle assembly further comprising: an outlet for leading a supply cable out of said housing; a sleeve formation extending from said sidewall around the first opening and surrounding the graduation; and a terminal block configured to be securely fitted within said first opening, the electrical receptacle assembly characterised in that said terminal block includes a plurality of female contacts (112A-E) separated by projecting fins and second securing formations complementary to said first securing formations on said first opening to enable the terminal block to be rotatably mounted in said first opening, relative to the hourly graduations, corresponding to a desired voltage rating, for accommodating pins of a male connector that has a configuration of pins arranged in accordance with a round clock numbering at fixed hourly positions for the desired voltage rating, and said second opening configured to receive the knob of a switch assembly configured to be received within said second compartment, said switch assembly securable to said knob. a housing having a first compartment and a second compartment removably securable to each other by means of fasteners, said first compartment having an operative sidewall having a first opening and an operative base having a second opening, said first opening having hourly graduations with a corresponding first securing formation for each graduation on the operative front face of the sidewall facing the outside of said first compartment; and the electrical receptacle assembly further comprising: an outlet for leading a supply cable out of said housing; a sleeve formation extending from said sidewall around the first opening and surrounding the graduation; and a terminal block configured to be securely fitted within said first opening, an outlet for leading a supply cable out of said housing; a sleeve formation extending from said sidewall around the first opening and surrounding the graduation; and a terminal block configured to be securely fitted within said first opening, the electrical receptacle assembly characterised in that said terminal block includes a plurality of female contacts (112A-E) separated by projecting fins and second securing formations complementary to said first securing formations on said first opening to enable the terminal block to be rotatably mounted in said first opening, relative to the hourly graduations, corresponding to a desired voltage rating, for accommodating pins of a male connector that has a configuration of pins arranged in accordance with a round clock numbering at fixed hourly positions for the desired voltage rating, and said second opening configured to receive the knob of a switch assembly configured to be received within said second compartment, said switch assembly securable to said knob.