Having been an electrical power distribution engineer in different jurisdictions, I can tell you when and where to use say 222 or 224 ITS WHICHEVER THE LOCAL JURISDICTION SAYS YOU USE and certainly NOT what I or anyone here (Including Billy Bob and Bubba) may say or think. On typical 120/240 Volt Single Phase Three Wire residential service if it happened one leg of 120 was full loaded and there were no 120 volt loads on the other leg, THE NEUTRAL WOULD BE CARRYING THE SAME CURRENT AS THE HOT LEG, however if both legs of 120 volt carried the same current THERE WOULD BE NO NEUTRAL CURRENT (possibly subject to harmonics).
When I practiced engineering just to be on the safe side when I didnt know the load distribution I would NOT derate the Neutrals ampacity even if the NEC or local inspectors may have allowed it. Better safe then sorry I figured and no one or inspectors complained.
Now yall do as you please, its your money and your choice and you get no argument from me.
John T Long retired EE and rusty on the NEC so no warranty, I can only report how I did it where I practiced, do as you like
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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