Dear RMB,

I am reducing the wire size downstream from 12 to 14 AWG on the 15 amp
breaker for the portion of the circuit without a shared neutral (see
full description previously posted). Based on what others say there is
no code issue here. Your argument that later no one will know not to
put a 20 amp breaker in in the future is false. They will know because
there is currently a 15 amp breaker installed so they need to find out
why before switching to a 20 amp breaker. You just can't go replacing
15 amp breakers with 20 amp breakers or 20 amp with 30 amp based on the
wire size entering the main panel. Unless you can provide some other
argument for your statement other than the debunked argument above I am
going to proceed as planned.

Thanks,
William