Just bought a log home built in 1980. Doing some remodeling /updating. Almost all the junction boxes have 3M Scotchlok in them. Sometimes they are referred to as "vampire connectors."
Are these connectors up to code? I'm thinking of taking them all out and using the standard twist wire connectors.
The connectors are sized properly. For example, the kitchen outlets are on a 20 amp circuit with 12 gauge wire. The Scotchlok connector model used is 562. Looking on the connector it says "10-12 GA". Looking online I found the product sheet and it is UL 486C compliant as well (not sure that meets the NEC code for wiring a home).
I'm used to seeing these used in car audio stuff... Not in the home. And they usually end up having problems... Like not making a good connection, or failing altogether.