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67.058.610 (Issue 1)
6. Installation
• The RCD should form part of a 30A ring main or
terminate a spur off a 30A ring main. The cable
connecting the supply to the RCD should be either:
2x 2.5mm² for the ring main or 1x 2.5mm for the spur.
• Make sure to tighten all screw terminals onto
exposed wires.
• Ensure that there is both sufficient length of the supply
cable tails(s) to enable easy wiring.
Note: With some makes of BS4662 boxes it will be
necessary to bend back the upper and lower fixing lugs
to enable RCD to be fitted.
6.1 Ensure the mains supply is switched off and the circuit
supply fuses are removed or the circuit breaker turned off.
6.2 Connect the incoming 230V 50Hz supply and outgoing
load cables to the relevant terminals ensuring correct
polarity is observed and that all bare conductors are
sleeved (see section 7. Connection Diagram).
6.3 Finally secure the unit to the back box with the fixing
screws provided, forming the cables during installation
to avoid any entrapment and cable damage.
Do not over tighten.
