General Order 128
Requirements for Supply Systems
The following rules cover the requirements for material, construction,
installation, maintenance, inspection, clearances, and depths for cables installed
under these rules.
Nothing in these rules shall be construed as prohibiting cables directly buried, installed in pipes and ducts at the site, preassembled in ducts prior to installation, installed in tunnels, shafts, or cable trenches, or placed on or under the surface of bodies of water.
33.2 Maintenance and Inspection
33.4 Clearances and Depths
33.5 Above-ground Installations
33.6 Arrangements in Manholes, Vaults, and Enclosures
33.7 Grounding and Bonding