Know the rules before choosing training
California rules differ by trade. Electricians working for C-10 electrical contractors are covered by the state electrician certification program, while plumbing and HVAC contracting are regulated through CSLB contractor classifications. Employee, project and local requirements can differ, so verify the exact role before paying for training.
A contractor license, employee credential, apprentice registration and federal certification are not automatically the same thing. Always verify the exact role and locality.