I am currently in the middle of finishing a portion of my basement to become an office. I am in NY State in the US. I plan to have two groups of lights, each controlled by its own switch - two light switches in total. My plan is to run supply wiring for the lights up to an initial junction box in the joist cavity, and then have them go out to their appropriate locations from that point. I plan on installing a drop ceiling, so everything going in joist cavities will be accessible.
Given that two 12/2 cables will be nominally required, one for each group, my plan is for the initial supply wire coming from the light switch box to be a 12/3 cable. The hot of each 12/2 would connect to the appropriate hot in the 12/3, and then both would share the ground and neutral. Is this considered acceptable, or will I need to run two 12/2 cables from the light switch box directly?
Edit: Apparently what I'm describing is a Multi Wire Branch Circuit, which has additional requirements associated with it that I have not considered. I'll just run two 12/2s.