Would they be able to prove it wasn’t installed by a licensed contractor? Ok, if you have it installed legally then you’ll likely have an invoice/receipt, but if you lose it that doesn’t mean the cable is illegal. So if you did it yourself, how would they know it’s not just a case of a missing invoice?
I seem to remember that yes, it was even for low voltage data cabling.
Not that I would imagine anyone’s enforcing it strongly
I think the enforcement would come with insurance when your house burns down, they can point at “unlicensed” cables
Would they be able to prove it wasn’t installed by a licensed contractor? Ok, if you have it installed legally then you’ll likely have an invoice/receipt, but if you lose it that doesn’t mean the cable is illegal. So if you did it yourself, how would they know it’s not just a case of a missing invoice?
I’m not saying it would go anywhere, but with how scummy insurance companies are they might try it. Still, it’s a bullshit law