Except as herein otherwise expressly provided, in all respects in which the commission has power and authority under the Constitution of this state or this chapter, applications and complaints may be made and filed with the commission; processes, notices and orders issued, served and proved; hearings held, opinions, orders and decisions made, reconsidered, amended, revoked and filed; petitions for rehearing filed and acted upon; and appeals and petitions for writs of mandate filed with the courts of this state and considered and disposed of by said courts, in regard to the matters provided for in this chapter, in the same manner, under the same conditions and subject to the same limitations and with the same effect specified in Chapter 3 of this title, or acts amendatory thereof or supplementary thereto, as far as may be practicable.