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Australian Power Points with Round Earth Holes?

A question for the sparkies out there.

I remember from my days in High School that appart from the usual 10 amp and 15 amp power points they also had power points which have a round earth pin instead of a flat pin.

My question is why do these outlets have a round pin and what sort of purpose are they for ?

Update:

I'm not refering to three phase outlets here. Here is an example from the clipsal website.

http://updates.clipsal.com/ClipsalOnline/ProductIn...

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    3 phase power-points have round pin holes 4 of them

    normal power-points don't that i have ever seen

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