Asked this in the Electricians thread and go no response so though I would repost in here to see if I could get an answer.

I can be classified under 4 NOC codes

7217 - Oil Field Construction Supervisor
7212 - Industrial Electricians Supervisor
7242 - Industrial electrician
7241 - Construction Elelctrician

If my PR app is successfull can I do a red seal exam for all 4 of them if I wanted or would I only be able to do 1 and thats it?

Nothing to stop you do all four exams. Red Seal is not in itself a qualification, it is a nationally recognized endorsement of the provincial qualification. To take the exam you have to have the required hours experience and be up to the provincial standards.