I had my electrical workers license which allowed me to work on mains equipment & test & tag. The licensing authority sent me a cheque in the mail after I renewed it a couple of years ago with a letter stating that I no longer needed the license to do what I was doing. ie testing & tagging. So I take it you don't need a license to test & tag just the appropriate gear.
^^^^ it been like that for yrs
You can get an approved machine, it will do the mandatory tests, print the label, even keep its own data log, done, all requirements met
But then you need to get a license elec or someone else with an approved machine to tedt and tag your machine
Blah blah blah typical tight arse.
General public don't realise what's involved behind the scenes in being a sparky.
Having an EW or EC number and performing task from T&T, installs that require maximum demand calculations, cable selection and correct circuit protection or just maintenance etc requires buying meters (I have 5k worth of meters), recording appropriate tests from main earth resistance, insulation resistance, fault loop impedance and RCDs then putting a licence number to all that work and tests done. Therefore your job, your business, your house and your family are on the line.
There are huge fines and prison sentences that are enforced if you don't comply with these procedures.
So anyone who thinks that just because you're an engineer or self appointed handyman, have a dick smith multimeter and thinks that $5 for a T&T or $90 an hour is a rip off, think again.
Food for thought, how much does your car mechanic charge? About the same? Not trying to bag what mechanics do but look at what's involved.
Thanks for reading my rant
It's a whole industry now, here's some info.
www.testandtagtraining.com.au/how-often-to-test-and-tag
Stay Safe 
Ive seen a Jim's test and tag (like Jim's mowing). What a job.. just doing that every day all day.
(Just to add insult, it was last tested within the quarterly date anyway, just wasn't the right colour tag.)
