I agree with Bob about a caravan inlet, plenty of models to choose from etc.

There are also a few online wholesale suppliers like sparky direct, MJS etc, there both on eBay but sometimes cheaper going through there websites depending on what your buying at one time.

I've bought from both of these companies and much cheaper than Bunnings, and free postage over $100 I think it is on there websites.

Amongst alot of other gear like rolls of wire I bought wall switches a box of 10 for $20, and double power points $33 for a box of 10 from memory posted.
All the products are all Australian approved and certified and they have all the double pole gear to suit your application.

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