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Vetassess assesment is very broad, it seems to look at electronics, domestic wiring as well as light industrial, they seem to be looking for a general level of competance and an understanding of most things. You need to know electrical units V, I, R, Z and all the different variations of ohms law,also power factor is important,there are Q on ELV,50V in AC circuits and 120 in DC... Prepare yourself for questions bout transformers as this comes up,they ask alot of questions bout health and safety and also on safe islation.. They start the day with registration bout 0800.driving license or passport will do for id. You sit a paper based exam on all the above mentioned,ohms law reisitors in series parralel etc,transformers and a bit about H&S. The day normaly finishes about 1600 and you get a lunch break at about 1200. You get a booth where you have to do a mock up install,this is from a drawing and requires 2 way lights Socket Using all material provided plastic conduit,twin and earth clipped,this part takes all day and you get called of to do other bits throughout. Wire up a DOL starter motor with start stop,you have to do this in star or delta,while this goes on yu get asked 3 phase questions. Pin board setup,once again from drawing,this is resistors connected in series and parralel,at the end you have to take some meusurements voltage, resitance, and prove your calculations. Then comes the safe isolation part,this is very strict,they wnt to see you do it right.tag and lock procedure,test and prove dead etc. They say bring own tools but its not the ned of the world if you dnt they supply everything... Hope this helps Feel free to ask any questions did mine in oct so its all still fresh in my head