Section 8054 Of Article 3. Underground Transmission From California Public Utilities Code >> Division 4. >> Chapter 5. >> Article 3.
8054
. No person shall build or rebuild any subway, manhole,
chamber, or underground room, used or to be used, to contain, encase,
cover, or conduct any wire, cable, or appliance to conduct or handle
electricity unless the floor of the subway, manhole, chamber, or
underground room is made of stone, concrete, brick, or other similar
material not subject to decomposition. This section does not apply to
any subway, manhole, chamber, or underground room within which it is
not intended or required that any human being perform work or labor
or be employed.