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[anthonyanthony]

People , a friend of mine is building his house .. an upstairs and downstairs.
I noticed the electrician is running 2.5 mm single single wires for the plug outlets.
I asked the electrician about this and he told me this is correct for a house ... he will be using 2.5
wires for the 120V outlets and 1.5 wires for the lighting circuits.

My home , same upstairs and downstairs which was built in the mid 1980 's , I noticed the 120V outlets
is using 4.0 mm single single wires.

Is the electrician is correct for using 2.5 instead of 4.0 or is he trying to cut his cost ?

[eggman]

What he's using is correct. U usually use 4.0 wire in cases like water heater and air conditioning etc.

[rfari]

1.5mm for 6 duplex outlets, 15a breaker
2.5mm for 9 duplex outlets, 20a breaker

[ADONI]

1.5mm for 6 duplex outlets, 15a breaker
2.5mm for 9 duplex outlets, 20a breaker

Correct!

[teems1]

Also remember 4.0mm 30amp breaker won't be sufficient for the tankless water heaters (Stiebel Eltron),

Those require at least 8.0mm and 50amp breaker.

[ronsin1]

,

Those require at least 8.0mm and 50amp breaker.

where sells 8.0 mm sq cable

I know about 10.0 MM sq

[mark2.0]

electrician correct.


btw op, whats your electricity bill like?

[pete]

Thicker wire would not increase electricity consumption eh. There is no harm going bigger apart from cost really.

[ruffneck_12]

use 0 gauge for everything

[anthonyanthony]

OK people , thanks very much