To live or work in Canada you can euither apply for the Provincial Nominee Programme where you have to prove you will be able to find a job, find an employee to sponsor you, there is a new programme starting this year to replace the Federal Skiled Worker programme that got out of hand with the Canadian immigration moving the goal posts and knocking people back for absolutley stupid reasons, including taking an English test to prove that you can speak it, despite being a native speaker.
If you are just starting as an electrician you would be better off starting or finishing your apprenticeship over there, and gain knowledge and experience on the North American wiring system.
If you serve your time over here, if and when you get to Canada, your city and guilds will have to be assessed by the Provincial board of trades, which in turn will allow you to work for six months. But within that time you will have to challenge the Inter Provincial Red Seal Examination to obtain a licence that is valid for life, except in Ontario where you have to pay every 4 years to renew for some reason. This will then allow you to work in any of the Canadian Provinces, States, and Terratories.
You will probably be better off trying the family sponsorship route first, but they have to be, Father, Mother, Sister, Brother, Son, Daughter, I think in Alberta they allow cousins and Grandparents but don't quote me on it.
The cold weather in Canada can get down to -40 deg C but averages -25 deg C, and the winters can last for up to 7 months on average, but on some days it can rise up to 12 deg C then drop back to - 25 deg C. The humidity across Canada can vary, but the cold weather is actually much dryer and more bearable than the cold in the UK, until you touch certain surfaces. They are much more organised during and after a heavy snow fall than what they are over here.
The warmest Province is British Columbia averaging the same temps as the UK, and probably the most picturesque, and probably the most expensive. The Canadians don't have a culture as such, their pubs and bars tend to boring along with most of the people, and they don't watch footy, they watch ice hockey. But petrol, gas, and electric are cheap, but food and drink is expensive.
Most of the top money is in the oil sands and around Fort Mac, but its an hirem firem culture, and some of the firms are heavily unionised, and won't think at nothing at going on strike at the drop of a hat. The smaller firms work a 40 hour week and don't always pay overtime at a premium.
Having said all that, my advice to you is to pursue it further as this country has been finished for over 30 years. But be prepared to deal with the most bombastic, beauracratic, pedandtic set of knob necks you can imagine. The Canadian immigration service.