I don't agree with the example of using a #10 and 3 #14's for a few reasons:
1. Each ungrounded conductor must be a different color- which is not clearified in the example.
2. If it is a multi-wire branch circuit by virture of the fact that it is using 2 ungrounded conductiors that have a voltage between them per the definition, then I would not approve the additional ungrounded conductor tagging along on the grounded conductor of the multiwire branch circuit.
3. I am assuming that "#10 gc" means grounded conductor.
4. 210.4 (C) makes it to debateable and on top of that ir's wierd.
