Back when I started the trade most of Canada was still 25 cycle .
Well the first job I was on as an apprentice I new zip about many things .
I was working at a new building and every thing was 60 cycle and my job was to confirm nothing was 25 cycle going in .
We has a shipment of fluorescent fixtures and they where all 60 cycle .
In the next room was all the Tubes and they had big purple stamp on each box 25 cycle tubes .
I went to the forman and he was so glad I had caught this well they made arrangements to get the correct tubes and lots of phone calls and how where we going to get the proper tubes .
Now the question for all the electricians out there is what was the difference between 25 cycle and 60 cycle Fluorescent tubes .