You will need to find an Australian employer willing to sponsor you or otherwise apply for PR. You can't just go over and look for an employer without having PR or having a sponsor. It will take approx. 5 (ish) weeks to get your trade papers/employment history assessed and then you'll be booked in to do your Vetassess "exam". All in probably 12 weeks. Then you have an OTSR which entitles you to apply for a provisional electrical licence when you land in Australia.