I have recently heard many conflicting opinions which electrical circuits MUST, MAY and MAY NOT be routed through an Earth Leakage (RCB).

Can someone please give me a definitive must/may/may not answer for each of the following:

• Lights (ceiling mounted)
• Lights (perimeter wall)
• Normal 3-point plugs (non-dedicated)
• Geyser
• Stove
• Pool Pump
• UPS
• Garage door opener
• Gate motor

If all of the above is must/may, is it allowable to use a earth leakage with overcurrent protection (RCCB) as a Main Switch?

Thanks