Circuits, panels & fit-outs
Commercial Wiring in Westford, Newton & Greater Boston
- Licensed & insured
- Free estimates
- Warranty-backed work
Commercial Wiring
Commercial wiring plays by different rules.
Commercial spaces carry heavier and more varied loads than homes: commercial appliances, compressors, rooftop HVAC, POS systems, server closets, EV chargers and more. They often use different wiring methods too, such as conduit and metal-clad cable, and they’re subject to their own set of code requirements and inspections.
Dedicated circuits are a big part of it. Commercial equipment frequently needs its own circuit so a fault or startup surge in one machine doesn’t take down another. Fit-outs usually mean reworking circuits and adding subpanels to match a new layout. And many older spaces come with a history of tenant add-ons that need to be sorted out before anything new goes in.
We handle commercial wiring from small single-circuit jobs to full fit-outs, keep the work organized and labeled, and coordinate permits and inspections so the space can open on time.
“Great people to work with. Very knowledgeable of what they do. Always meet my expectations when the job is done. Thank you for your work ethic. Highly recommend!”
Signs to watch for
Common commercial wiring needs.
- 01
Equipment circuits
Dedicated circuits sized for commercial appliances, compressors and tools.
- 02
Fit-out rewiring
Circuits and outlets moved and added to match a new floor plan.
- 03
Subpanels
Additional panels to serve new areas or large equipment.
- 04
Tripping and overloads
Circuits that trip under normal operation need rebalancing or new circuits.
- 05
Code corrections
Fixing previous work before an inspection or a new tenant moves in.
- 06
Data and low-voltage prep
Boxes, conduit and pathways for data and security systems.
What the job involves
How we run commercial wiring jobs.
- 1
Review the space and loads
Existing panels, circuits and the equipment that needs power.
- 2
Plan circuits
Circuit layout, panel capacity and wiring methods.
- 3
Permit and schedule
Commercial permits filed and work scheduled around operations.
- 4
Install
Organized runs, labeled circuits and clean terminations.
- 5
Inspect and hand off
Inspection, updated panel directories and a walkthrough.
Good to know
Good to know before commercial wiring work.
Get equipment specs early. The fastest way to delay a fit-out is to find out, after the walls are closed, that a new oven, compressor or dryer needs a different voltage or a larger circuit than planned. Send us the equipment cut sheets as early as possible and we’ll plan circuits to match.
Think about growth. Businesses rarely shrink their electrical needs. Leaving spare breaker spaces, pulling an extra circuit to the back room, or installing conduit with room for more wire costs little during construction and saves a lot later.
Coordinate with other trades. HVAC, plumbing and low-voltage contractors all need power in specific places. We work from the same drawings and schedule so everyone’s equipment has power when they need to test it.
Label everything. In commercial spaces, clearly labeled panels, junction boxes and disconnects save time for everyone who works on the building later, including your own maintenance staff. It’s standard on every job we finish.
Plan inspections into the schedule. Rough and final inspections can set the pace of a fit-out, so we book them early and make sure the work is ready when the inspector arrives.
Why it matters
Downtime is expensive.
In a business, every nuisance trip and failed circuit interrupts work. Wiring that’s sized and organized properly prevents most of those interruptions and makes future changes faster and cheaper.
Clear labeling and documentation also help your staff and any future contractor find what they need quickly when something does go wrong.
- Dedicated equipment circuits
- Panels & subpanels
- Conduit & MC wiring
- Labeled & documented
Commercial Wiring FAQ
Questions we get about this work
Is commercial wiring different from residential?
Yes. Commercial work often uses conduit or metal-clad cable, serves heavier and more varied loads, and has additional code requirements.
Why do commercial buildings need dedicated circuits?
Many commercial appliances and machines draw heavy or surging loads. Their own circuits keep one piece of equipment from tripping others.
Can you add a subpanel for new equipment?
Yes, if the service can support it. We check capacity first.
Do you work with general contractors?
Yes, regularly, on fit-outs and renovations.
Can you work in an occupied commercial space?
Yes. We plan disruptive work before or after business hours where possible, keep work areas safe and tidy, and coordinate access with building management.
Related services
Often done together.
Nearby service areas
Commercial Wiring across the region.
- Westford, MA
- Newton, MA
- Chelmsford, MA
- Lowell, MA
- Billerica, MA
- Tewksbury, MA
- Lexington, MA
- Burlington, MA
- Boston, MA
- Cambridge, MA
- Hillsborough County, NH
- York County, ME
Free estimates · Financing · Warranty
Ready to talk commercial wiring?
Call Monday to Friday, 8:00 to 4:30, or send a note and we’ll get back to you with a time for your free estimate.