This is it CSA = Canadian Standards Association
http://www.csa.com/

Inspector from electrical safety is most likely looking at this:
http://www.csa.ca/standards/electrical/Default.asp?language=english

When the bureaucracy catches up with you, unfortunately You have two choices.
One. Pay the price and hope it works. The victims approach, just don't know where it will lead. Field Inspector could ask for Lab testing... all kinds of stuff you do not have, nor could afford, therefore shutting you down.
Two. Fight. This can get as expensive as above if you do not know what your doing.

To not be a victim you will have to learn the law as it applies to you. If you do not then it will cost you, the less you know the more it will cost.

TheCasualTraveler gave very good advice. Find others in the area with wind gen, see if they have any experience with this guy. Particularly his comment "(without offering suggestions)". The less you tell them the better off you will be. Everything you say will be used against you.

Verify the guy is from the city. Scams everywhere.

Ask inspector in writing to cite the code (or law) as he applied it here in witting (Proper citing will list the document name (number), page, paragraph). Often the inspectors do not know their own law they are operating under to do so or will cite something that does not apply.
Over 700 CSA electrical standards and electronics standards address everything from fuses and light bulbs to sophisticated equipment for control and laboratory use.
To say it must be CSA approved is like saying it must comply with the law without saying which law.
If inspector cits a shock hazard, by law (international) under 50v is below accepted shock voltage limit, 24v does not apply.

Show the CSA stickers on the inverters, may be the only place it needs to be.