good answer KNOB-AND-TUBE i will twist if i have 3 or more conductors but never tape there should be no reason for it if no copper is showing under skirt of wire nut
A careful reading of the manufacturers' instructions will reveal that you are supposed to twist the nuts tight enough that the wires are tristed together inside the nut. Simply having the wire nut hold wires next to each other is an incomplete installation.
That said, pre-twisting is very wise for neutrals in multi-wire circuits. I also often pretwist all wires evceot for the pigtail leading to a device; this facilitates later maintenance work, as the pigtail is then wrapped on the outside of the 'twist'.
What I want to know is how many more times are we going to discuss this?
Yep this one is right up there with "How many times do you torque aluminum connections?" Some of these questions can not be answered without controversy.
I perfer to solder the connection, install a wire nut, install rubber tape, followed by varnished cambric, then plastic tape (3M #33) then friction tape followed by another layer of plastic tape. This is for splicing #14 AWG residential NM cable. For something more demanding I let the experts handle it.
George, I thought that you installed the varnished cambric first and then the rubber. That makes it much easier to open the splice back up when you have to work on it. Don
