Yes, you are absolutely correct. If a job requires separate neutrals for each circuit instead of allowing shared neutrals (multi-wire branch circuits), you would use significantly more copper, especially in a building with many receptacles and lighting fixtures.Here's why: Single Circuits

Each circuit requires its own hot wire, neutral wire, and possibly a ground wire.

Multi-Wire Branch Circuits: Share a neutral conductor between two or three circuits.With shared neutrals, you eliminate the need for a dedicated neutral for each individual circuit, thereby reducing the total amount of copper needed.Therefore, a project that doesn't allow sharing neutrals would require significantly more copper for the neutral conductors, leading to higher material costs and potentially more conduit space needed to accommodate the increased wiring. Flag for review