That installation actually derates it a bit to 37 amps but it will be fine.
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Just a bit more info on these contemplating doing the same as me.
The reason I asked re the 6mm twin + earth TPS was not regarding the wire size but rather the wire configuration. One guy wanted to run 6mm SDI wires plus an earth which was more expensive.
Cheers
Two single cores actually increases the current carrying capacity a little bit. He probably has a couple of rolls of 6mm SDI sitting on the shelf. Good opportunity to use it up.
At last a fine day and the sub board is in plus 3 x 15A GPOs.:2tsup: Great guy, will use him again. Less than 1/2 the cost of some of the quotes. One guy quoted 3 days labour, this guy and his mate arrived at 10:15 and out at 1:45pm.
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