aircon wiring 4 mm but earth much thinner

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aircon wiring 4 mm but earth much thinner

Postby dendijk » Mon Mar 02, 2015 1:45 pm

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?
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Re: aircon wiring 4 mm but earth much thinner

Postby Sometimewoodworker » Mon Mar 02, 2015 3:06 pm

dendijk wrote: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.
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Re: aircon wiring 4 mm but earth much thinner

Postby Shastadad » Tue Mar 03, 2015 8:14 am

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
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Re: aircon wiring 4 mm but earth much thinner

Postby Sometimewoodworker » Tue Mar 03, 2015 10:17 am

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.
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