I had a licensed HVAC guy come in to install a heat pump and an air
handler and to rewire them to the breaker box. The inspection passed,
and all is okay.
However, I have a second, smaller home next to my first, in which my
mother-in-law lives. The same guy installed HP/handler and rewired as
before, but he used what he called a "gang box(?)" or something to
that effect, because he said that he ran out of wire and had to make a
connection to the box.
Question: Is this okay to do when they run out of wire? I saw him and
he connected them (8 size) with each other, put a cap on each set,
twisted the caps, and capped the ground wire too. Then he put tape
around each cap so that he created a seal around them (or so it
seems). The box is in the attic.
I'm not an expert but am under the impression that electrons traveling
through these twisted wires will find it harder to make the connection
through the caps. The HVAC guy said that that would happen, but that
it would not be a concern as long as the box is inside the house.