Milpitas residents and commercial property owners can transform their exteriors by upgrading from dated overhead wiring to clean underground utility systems. This improvement delivers immediate visual impact while building long-term property value.
Our expertise includes underground fiber and internet installation serving Milpitas addresses. Cable television, telephone service, and high-speed internet connections can all be buried beneath your property—creating a streamlined appearance free of dangling wires and cluttered pole connections.
Traditional trenching excavation often proves both costly and destructive to established landscapes. We utilize trenchless technology that minimizes surface impact while keeping your project budget-friendly. Request your free estimate today to learn what your underground conversion will cost.
Underground utility installation represents the smart choice for electrical infrastructure—practical, economical, and visually superior. Cables buried below grade enjoy protection from weather events, accidental impacts, and natural degradation that commonly affect overhead wiring.
City of Milpitas Approvals and PG&E Coordination
PG&E provides electric service in Milpitas. Installing or replacing underground electrical conduit typically requires an electrical permit for conduit/panel-related work (and an encroachment permit if any work is in the public right-of-way).
The Milpitas Building/Permit Center handle permits and inspections. You can pull your own permit, or TrenchFree can handle the entire process—inspection, design, permitting, execution, inspections, and sign-off.
City of Milpitas Electrical Undergrounding Requirements
In Milpitas, electrical work involving underground and under-slab conduits must conform to City of Milpitas building codes, inspection processes and utility requirements, which are primarily based on the National Electrical Code (NEC) and PG&E standards.
Key Requirements for Underslab Electrical Work
- Inspections: A specific underslab inspection (rough mechanical, electrical underground, plumbing underground) is mandatory before concrete is poured. Slab edge forms must be in place at this time.
- Permitting: All work must conform to the latest City Standard Details and Specifications. Property owner or contractor should contact the Milpitas Engineering Department for any questions regarding the permitting process.
- Conduit Type and Depth: The NEC and local regulations specify minimum burial depths based on the type of conduit used.
- PG&E Requirements: For utility service, a minimum of 24 inches of cover is required for secondary service (0-750V) and 30 inches for primary service (over 750V).
- General NEC Guidelines (Under concrete slab):
- Rigid Metal Conduit (RMC): 6 inches of cover.
- PVC Conduit (Schedule 40 or 80): 18 inches of cover, unless encased in concrete.
- Protection: Conduits running under slabs should be protected from the concrete itself, often using materials like tar paper or duct tape where the conduits stub up or pass through beams.
- PG&E Requirements: For utility service, a minimum of 24 inches of cover is required for secondary service (0-750V) and 30 inches for primary service (over 750V).
- Contractors: Only licensed contractors such as TrenchFree or utility providers such as PG&E are permitted to install or service electrical conduit.
- Coordination: Planning must involve the accurate layout of all utilities (water, sewage, electrical lines, etc.) that go in and out of the slab before concrete placement. That ensures compliance with all local codes when installing underground electrical conduit using trenchless methods.
- For detailed city-specific documentation, refer to the City of Milpitas website or contact the City of Milpitas Engineering Department directly at 408-586-3300
