When circuit breakers first came into common use and the rules changed there were some unscrupulous electricians who used 1.0mm for plug circuits and put them on a 10amp circuit breaker.
larknz: If it has rewireable fuses you were only allowed 2 sockets per circuit, although many have replaced single sockets with doubles.
Yes there are only two single outlets per circuit on 15amp rewireable fuses.
Odd considering with 2.5mm you can have 12 double outlets per circuit.
Basically wanting to know if I can change them to doubles and still have it be up to standard. Would an electrician refuse to change them
You are mixing up different sets of rules. In the days of rewireable fuses you were only allowed 2 outlets per fuse. 3/036 (1.5mm) was the standard wire size. If the circuit was longer 7/.029 (2.5mm) was used for the volt drop. It was common practice to count a double socket as a single outlet. Nowadays you can have as many outlets as you want on a circuit protected by a circuit breaker. You are quite safe replacing a single socket with a double socket. If you want to be sure you could put a plug in circuit breaker in the fuse base, although I'm pretty sure you need an electrician to do this.
larknz: When circuit breakers first came into common use and the rules changed there were some unscrupulous electricians who used 1.0mm for plug circuits and put them on a 10amp circuit breaker.
I got the feeling that was what happened in the place I described, the comment was something like "they saved a few dollars by buying a roll of X cable instead of Y cable". They found out after having to redo the bathroom floor which was half rotted out because they'd also saved a few dollars there in the shower lining.
They also saved a few dollars by not putting a pelmet over the top of the wardrobe to hide the tracks for the doors, and by ...
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