The Red Seal is an endorsement, not a licence
The Red Seal — formally the Interprovincial Standards Red Seal Program — is a seal added to your provincial or territorial trade certificate. It shows you have demonstrated the knowledge for the national standard in your trade, so your certification is recognized across Canada. You earn it by passing the Red Seal exam after your provincial certification. It does not replace the provincial certificate; it travels with it.
Source: Red Seal Program (red-seal.ca)
Compulsory or not depends on the province, not the trade
Whether you must be a registered apprentice or a certified journeyperson to work in a trade is decided province by province. A trade can be compulsory in one province and voluntary in another — welding, for example, is a compulsory trade in Alberta but voluntary elsewhere. Always check the rules where you will actually work, not where you trained.
Source: Red Seal trade guide (ashtoncollege.ca)
Electrician is a compulsory trade in Alberta — here is the bar
In Alberta, electrician is a compulsory certified trade. The Trades Qualifier path needs 72 months — 9,180 hours — of verifiable work experience plus a theory exam, and the apprenticeship application fee is $150. Other provinces set their own bars, which is exactly why the Red Seal endorsement matters if you ever move.
Source: Our electrician apprenticeship guide
Over 50 trades carry the Red Seal — including plumber and construction electrician
The program covers more than 50 designated trades across the construction, industrial, motive power, and service sectors — construction electrician and plumber among them. If your trade is on the list, the endorsement is the cheapest career insurance you can buy: one exam, and your ticket works from Victoria to St. John's.
Source: Red Seal trades guide (skilledtradescollege.ca)