The application is a bathroom light and exhaust fan combination. The fixtures wires are thiner than the supply wires. Should I wrap the thinner wire around the thicker wire or should I wrap them equally around each other? Then can I put a drop of solder on before I put the wire nut. Or is solder not a good idea?
If the supply wires are solid and the fixture wires are stranded put the stranded wire slightly past the end of the solid, say 1/16. Then put a yellow wire nut on them. Tug on the stranded wire to be sure it caught. If the wires are both solid, try twisting the larger wire around the smaller one. It is tricky but if you let your lineman's pliers slip a little as you twist it should work. Cut back to about 1/2 to 5/8 and install the yellow wire nut. Time was wires were soldered together, but properly installed wire nuts are just fine.
Solder is unnecessary. Be sure to use the proper sized wire nut, and twist the wires together. after you install the wire nut, give each wire a slight tug to ensure that they are securely connected. Hope this helps.
If you are using a good grade of wire nut ( The inside of the wire nut is metal) soldering isn't necessary....It won't hurt anything but not necessary....Thomas Betts makes a good wirenut
First try twisting them together. Then put on the wire nut. Don't bother with solder since the wire nut makes a gas-tight permanent connection (but still could be removed if you want to make changes in the future).
