Not necessarily an NEC/code question. If I have two 10Awg circuits using 10/3 with ground MC cable and I put these together in parallel, what is the max current load that this will support?
Article 310.4 discusses conductors in parallel. Using the information there we find that paralleling #10 is only allowed in limited circumstances and based on Exception 1 (b) we find that parallel #10 (referring to table 310.16) carry 30 amps at 60 degree C (no increase in ampacity).