BigB
If they want you to "Certify" wiring in a house you might be able to write a letter such as,
On this date, I did a NON destructive inspection of the wiring in your house, and judging by what I could see, the wiring in the house seems to meet the present electrical code.
CSA has a standard for inspecting existing homes so I just write "inspected to CSA standard..." It's a good system because it takes into consideration that a home might have met code a few years ago and the wiring is still safe.
