If you are tripping the main breaker, have installed additional circuits or appliances or suspect you may exceed load capacity in your existing panel, then a service upgrade is recommended.
This kind of electrical work should definitely be done only by a licensed electrical contractor. Extensive knowledge of electrical code, wire sizing, methods, height and placement are mandatory knowledge for safely operating this kind of work.
If any new panel and circuits are put into use without first receiving proper inspection, it could be deemed your own fault in the event of an electrical fire or resulting accident.
Volt Electric Incorporated I Electrical Contracting Services I California LIC# 958246 I Vista, CA 92084 I Voltelectric @ Cox.net I (760) 822-9743 I All rights reserved © 2013