No. He's talking about a 240/120 high leg delta in the same plant that uses BOY for 480V delta. The red has six inches of orange tape to mark the high leg rather than use pure orange because that is already used on the 480V wye. The neutral would be white for everything powered off of the 240V system and grey for the 480V.
He said "Black, Red, Blue for 120/240v and RED TAPED 6" ORANGE for high leg." He didn't say the 120/240V was three phase and he addressed the high leg case separately. If what you say is what he meant, then I misunderstood. I've never seen blue wire used in a 240/120 high leg service, though.
I once had to design a PV system for an automotive body shop I had never visited and it was ~1000 miles away. The service conductors were red black blue, but the breakers in the MDP were all on two of the three phases. Our guy who did the site survey had taken pictures but had not measured the voltages. I called the shop to see if I could get one of their mechanics to do the measurements, but they were all afraid of electricity.
This is correct.
If you have more than one nominal voltage system you simply can't rely on tape and/or even sharpie.
I once was on a job in one half of a two tenant/occupancy building , and the guy in the other half was feeding a load center with a 480 feed. Talk about dangerous: not only using 240v equipment on 480 but the potential for someone making an assumption that it's 208 or 240
. I mean I'm one of those who say always measure don't assume, but I often battle with my logical brain and sometimes assume no one would be that dumb (the converse/inverse of dunning kruger?).
At same time how often do you have that many systems that would have branches throughout the facility?
Most systems I have had in a building was a 277/480 and 120/240 three phase services, and a 120/240 single phase SDS
I was trying to make the point that associating one single color like orange with a particular system makes no sense to me.
I recently saw photos of three sets of three phase conductors where all the phases of each set were all one color. I believe that one set was baby blue, one set was yellow, and one set was pink.
NEC doesn't specify any identification at all if there is only one voltage system on the premises, other than for grounded and equipment grounding conductors of course.
ggunn is from Austin area according to profile. I bet there are places away from the larger cities where you can install things anyway you want or maybe even without license/permit/etc that don't even comply with NEC and nobody makes you change it. That however doesn't waive your potential liability should someone be hurt because of your poor installation.
I have a customer that’s building a vacation house on the coast in Texas, and he said there was no inspections.
maybe that's due to the life expectancy of a house on the Texas coastThat is perilously close to a political comment; I will just say that "freedom" doesn't mean that there are no rules. I will just add that Austin, where I live, is significantly different in many ways from most of the rest of Texas.
