When I was first starting out in the trade, red seal was in its infancy and really was not an issue like it is today. To get a red seal you needed a 95% pass, but the standard pass was 75% I believe, so you could still get your licence if you were above 75%. Back then, even with the “red seal”, you still had to write the provincial exam for where you wanted to work, so a majority of guys that I did school with never bothered, it was no value added. Having said that, being a “red seal” electrician back in the day was a big deal unlike today with a pass of 70% I think.
My trade school was basic, intermediate, advanced and post-advanced. When completed I received what was then a 309-D certification that encompassed all the electrical trades including industrial, maintenance and construction; so it covered the 309 series as well as the 442A and some “machine builder” trade, can’t remember what it was…
Historically the 442A was actually generated from industry and was specific; meaning that if you were trained as a maintenance electrician in a GM automotive environment you could move to another “automotive environment”, but you could not move to a “food environment”, etc. And of course you could not do “construction” related installs; basically only troubleshoot and repair. At the time the big focus was on PLC programming and motor control.
At some point industry (government?) said what is the difference between a motor in an automotive plant and an upholstery plant, so “they” started relaxing the requirements for 442As to stay within their own area of training / focus and they were allowed to transport their ticket from one industry to another as an “Industrial Maintenance Electrician” but were still prohibited from doing construction. Just to clarify, a 442A back then (and still today) is an unregulated trade and you do not need a licence to be an “industrial electrician”. In addition while there is an apprenticeship, there is no requirement to take an apprenticeship, you can simply challenge the exam at anytime.
From what I understand the curriculum has changed between a 309A and a 442A now, so the current 309As may not have everything what the 442As are getting if they go the school route. Having said that, a 309A is still a “Construction and Maintenance” electrician in a regulated trade so I would suspect while there may not be the same focus as there once was in such things as PLC or motor control, I suspect that there is enough to get any 309A well beyond what any 442A has trained for.
Hope this helps.
Cheers
John