Visa or ETA?
You either need a visitor visa or an Electronic Travel Authorization (eTA) to fly to a Canadian airport. You only need one or the other, not both.
Check you elegibility at: https://www.canada.ca/en/immigration-refugees-citizenship/services/visit-canada/eta/eligibility.html
If you require an invitation letter for visa purposes, please contact: Pauline Dela Zilwa, TRIUMF - firstname.lastname@example.org and submit your application as soon as possible.
Electric current in Canada: The standard voltage used in Canada is 127 V, while the standard voltage is 60 Hz. The power plugs and outlets used in Canada are the types A and B plugs.