Electrical Vault Requirements for Commercial Projects in California
Learn the California electrical code (Title 24 and NEC) requirements for electrical vaults, transformer locations, pad-mounted enclosures, and metering boxes on commercial projects.
Specialized Projects
Industrial Dry Utility Design: When Standard Approaches Don’t Apply
Industrial projects require specialized utility routing. Learn when parallel trenches are necessary, how to handle high-voltage coordination, and coordination for multi-tenant sites.
Utility Research Before You Design: How to Find What’s Already Underground
Learn the utility research process: who to call, what records to request, and how to use the data to design utilities that avoid expensive conflicts.
Dry Utility Joint Trench Design Standards: PG&E Rule 20, AT&T, and Comcast Requirements
Rule 20A/20B/20C, NEC Table 300.5 clearances, PG&E Greenbook, vault sizing, conduit fill.
Where Do Utility Stub-Outs Go? A Guide for Developers and Architects
Where Do Utility Stub-Outs Go? A Guide for Developers and Architects — answered by Reco Prianto, PE. CaliChi Design Group: civil engineering experts in Cal