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 - Seeing an Old Friend - by Joe Evans. Dad had a concrete contracting business starting in 1960. One of his first pieces of equipment was a Ferguson TO-35 with a Davis loader. Dad replaced the TO-35 with a MF 202 Workbull, essentially an industrialized Ferguson 35 I am told. Dad bought the 202 new in 1962, and I recall quite clearly going to the dealer with him to sign for it.
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