Not a sub DB - specifically states sockets , Luminaries and fixed appliances ( 6.15.4.2) - The C/breaker cannot be rated at more than 20 AmpsCan a Sub DB ... a plug circuit ... a light circuit ... an isolator feeding a fixed appliance ... all be fed from a single breaker ... labelled "mixed circuit"
The 20 Amp stipulation would exclude stoves - Aircons rated above 16Amp ( 6.16.4.1.1) need to be on dedicated circuit
You would need to take into account 6.15.4.2 note 1 and note 2 - Needs to be carefully consideredLets say we have an aircon on a isolator ... a couple of socket outlets and a couple of lights connected directly to a day/night switch ... all fed from a 20 amp MCB using 2,5 mm wire ... labelled "mixed circuit" ?
I would use a mixed load circuit for a swimming pool if getting access to the DB was a problem . The " pool DB" is actually a motor control center for the fixed appliance , being the pool.The minute I feed lights ( I would put the pool light as part of the pool) or plugs from the pool DB then it is no longer a motor control center but automatically becomes a sub DB and can no longer be on the circuit.
I would mix load to a gate motor and lights at the boundary wall.
Would use it for a garage that is stand alone and used for parking a car and using a socket for the vacuum cleaner. If the garage is going to be a laundry or workshop , then I would think twice.
Would use for a braai Lapa set up in the middle of the garden .
Personally think they are valid uses for mix loading but would not use it for general use and not trying to cut prices .The note about taking into account diversity and nuisance tripping are going to come back to haunt.
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