stranded wire

[tomh]

You don’t see it often because it is more expensive, requires some expertise to use different techniques, and its not sold at most DIY outlets. Stranded wire is more commonly used in larger amperage circuits and certainly supplies the power to your house. Don’t argue with the electrician, but ask questions so you know how to bond stranded wire in case you want to extend or modify a circuit in the future.

Good luck with the renovation. You are getting a top-shelf electrical job.