Electure is of course correct, but to clearify a tad...

C-10 allows you to CONTRACT electrical work, California certification allows you to PERFORM the work. Most of us out here have both a C-10 AND cetification, as most of us pull wire AND push pencils.

Some of the larger companies, however, split the work. The C-10 is held by a company officer/owner that is strictly a desk jocky, and all the guys in the field must only have certification to legally do the work contracted.

Hope this answers your question.

Are you planning to move out here?