rhenders
Member
- Location
- Alabama, USA
What is the proper way to connect three #4 copper conductors in a junction box? I have a generator (208 / 3 Phase / Wye) with the neutral or center conductor grounded. The generator is supplying power to a VFD/Pump through a large breaker. I'd like to tap into one phase downstream of the breaker to supply power to a 120 V light. Obviously, I'll need to use a junction box and some type of approved connector to connect the generator to the equipment and also to the 120 V accessory (much like a make-up in a residential switchbox - only larger). This will effectively form a "tee" in the #4 conductor. I haven't found a good way to connect all three conductors of this size (or larger) in a junction box. Wire nuts are too small (and probably not wise) and the lugs I find at the electrical supply houses are designed for bare ground conductors - no way to insulate them from the junction box. Is there an industry standard or acceptable part for this? I definitely don't want to use a bolt splice and tape it up! Thanks.
