aircon wiring 4 mm but earth much thinner

[dendijk]

Hello,

i am finding that for the aircon connection the wire used is 4mm but for the earth is much thinner.
Can somebody comment if that is to be expected on quality work done?

[Sometimewoodworker]

Hello,

i am finding that for the aircon connection the wire used is 4mm but for the earth is much thinner.
Can somebody comment if that is to be expected on quality work done?

It's OK. No problem.

[Shastadad]

Yeah, just look at any appliance or light fixture that has a "green" earth and you will note that is is not the same as the "hot" wires

We could joke that it is thinner since most Thai electricians don't earth but even in the West a ground or earth wire is thin in comparison

[Sometimewoodworker]

Just a little more information: the earth wire doesn't need to be thick as its main purpose is to blow the fuse or trip the breaker when there is a fault so it doesn't carry current for more than milliseconds, thus thin is OK.