Plugman,
South Africa stayed with BS546 on radials and did indeed uprate them to 16A. They are used on all standard power circuits, irrespective of load, i.e. a 40W table lamp!
The 5A plugs are rare and used mainly on lighting circuits which do have an OCP at 10A in general.
It's a good solid system.
DJK - now there's a roundabout thought!
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