An electrical receptacle assembly comprising: a housing comprising: a first compartment defining a first opening for a female connector to be connected to a male connector of an input power supply and a second opening for receiving a switch knob, said switch knob defining a slot along a central axis; a second compartment defining at least one third opening for receiving power supply cables, a base being provided for fitting a switch assembly in said housing, said switch assembly defining a spindle which is required to align axially with the slot along the central axis of the switch knob; the electrical receptacle assembly further comprising: a first and a second switch assembly mounting locations (30a, 30b) on said base being provided for mounting said switch assembly thereon such that the spindle is always aligned with the central axis of the switch knob, said first mounting location configured for use when the power supply cables are positioned to enter the receptacle from operatively below the receptacle and the second mounting location being configured for use when the power supply cables are positioned to enter the receptacle from operatively above the receptacle; and fasteners for removably fitting the first compartment with the second compartment with the spindle of the switch assembly aligned and fitted into the slot of the switch knob. a first compartment defining a first opening for a female connector to be connected to a male connector of an input power supply and a second opening for receiving a switch knob, said switch knob defining a slot along a central axis; a second compartment defining at least one third opening for receiving power supply cables, a base being provided for fitting a switch assembly in said housing, said switch assembly defining a spindle which is required to align axially with the slot along the central axis of the switch knob; the electrical receptacle assembly further comprising: a first and a second switch assembly mounting locations (30a, 30b) on said base being provided for mounting said switch assembly thereon such that the spindle is always aligned with the central axis of the switch knob, said first mounting location configured for use when the power supply cables are positioned to enter the receptacle from operatively below the receptacle and the second mounting location being configured for use when the power supply cables are positioned to enter the receptacle from operatively above the receptacle; and fasteners for removably fitting the first compartment with the second compartment with the spindle of the switch assembly aligned and fitted into the slot of the switch knob. a first and a second switch assembly mounting locations (30a, 30b) on said base being provided for mounting said switch assembly thereon such that the spindle is always aligned with the central axis of the switch knob, said first mounting location configured for use when the power supply cables are positioned to enter the receptacle from operatively below the receptacle and the second mounting location being configured for use when the power supply cables are positioned to enter the receptacle from operatively above the receptacle; and fasteners for removably fitting the first compartment with the second compartment with the spindle of the switch assembly aligned and fitted into the slot of the switch knob.