ECN Forum Forums Photo Discussion Forums Photos for General Discussion Ampacity of Phone Wire?

You'll love these. The switch is wired with doorbell wire #18, to the
light. There is also wiring with telephone wire 24/4 to other 120v
applications.

The service cable shown in the panel is welding cable. Note the separation
of the conductors. The service feeders at the inside panel is not the same
as the welding cable outside at the service main. There are no apparent
j-boxes. It appears the conductors are spliced somewhere in one of the
walls. No grounding conductor is present either. A young lady just
bought this home unaware of the electrical hazards that exist. The service was
updated a few years ago.

It looks more like some really old fabric-covered NM (6-3 maybe?) with the covering removed.