As for your characterization of non-union workers as scabs - a LARGE
percentage of electricians in the residential market in Ontario (and
elsewhere) are not elegible to belong to your beloved union because
they are "self employed" and therefore "management". Like the rest of
the building trades, everything is subcontracted.

Typically, subcontractors hire their workforce and the wiremen on residential
jobs are indeed employees of those subcontractors, not self-employed.