208V and 480V service, motor circuits, VFDs, and control panels for machine shops, manufacturing floors, multi-tenant commercial buildings, and HVAC scopes across the South Bay. Licensed C-10, fully insured, PG&E coordination included.
What we do
Three-phase wiring sits between the utility and the equipment that actually runs the building. Monte Power & Electric handles the full path: PG&E service work, switchgear, distribution panels, motor branch circuits, disconnects, and the VFD or starter at the equipment.
Common scope is a manufacturing tenant improvement, a CNC or fabrication-shop fit-out, a multi-tenant building with mixed loads, or a rooftop HVAC swap that needs a new disconnect and a properly sized motor circuit. Same crew on the panel and the equipment, so the install ties together cleanly.
By voltage & configuration
The right voltage and configuration depends on the loads. We spec the service to fit the equipment, not force the equipment to live within the existing service. Walk us through what's coming in and we'll come back with the design.
Most-common commercial
Standard for offices, retail, restaurants, light manufacturing, and multi-tenant buildings. Smaller motors, HVAC, and 120V branch loads off the same service. Common 200A to 800A range.
Industrial / manufacturing
The standard for serious motor and process loads. Larger HVAC compressors, CNC machines, fabrication equipment, conveyors, and pumps. Step-down transformers feed 208V or 120V branch loads downstream.
Branch-side scope
Dedicated motor branch circuits with overload protection, disconnects within sight of the equipment, and conductor sizing to nameplate full-load amps plus code-required margin. Compliance with NEC Article 430.
Variable speed
Variable frequency drives for HVAC fans, pumps, conveyors, and process motors. Includes input filters, output filters where the motor lead is long, control wiring back to a BAS or PLC, and start-up commissioning.
Common applications
Most commercial scopes Monte Power & Electric runs involve three-phase somewhere in the build. The eight below cover the majority of what we wire each month.
How a three-phase scope goes
Same disciplined sequence whether the scope is one rooftop disconnect or a full machine-shop floor. The crew that designs the install runs the install.
On-site walk with mechanical and equipment specs in hand. Nameplate review, load calc, distribution sizing, and AHJ check. No charge.
Itemized quote with line items for service work, distribution, branch circuits, disconnects, VFDs, controls, and commissioning.
Permit pulled, PG&E coordination scheduled where service-entrance work is involved. Transformer sizing and primary work handled.
Distribution, conduit, conductors, gear, motor circuits, and controls installed on the agreed schedule. Coordinated with mechanical and equipment trades.
Final inspection, motor rotation check, VFD start-up, and BAS / PLC integration verified. Sign-off, photos, and warranty paperwork delivered.
Quick answers
Six of the most-asked. More on the dedicated contact page or by phone.
Ready when you are
Send us the equipment list, the floor plan, and the timeline. We'll come back with an itemized quote and a mobilization date.
