Commercial Electrician
Unplanned shutdowns cost more than planned maintenance. Here's how often commercial and industrial electrical systems should be inspected, and what a good maintenance program covers.
Licensed · Bonded · Insured · CA Lic. C-1098584
October 29, 2026
Most commercial and industrial electrical systems should get a preventative maintenance inspection at least once a year. Critical or heavily loaded equipment may need it more often, and lightly used equipment in good condition may stretch longer between visits. NFPA 70B, the national standard for electrical equipment maintenance, ties inspection intervals to equipment condition and criticality rather than one fixed schedule. A good program includes visual inspection, infrared thermal scanning, tightening connections, testing protective devices, and keeping records.
_Last updated: November 2026_
NFPA 70B covers maintenance of electrical equipment in commercial and industrial facilities. With its 2023 edition it changed from a recommended practice to a standard, which raised its profile with insurers, safety managers and facility owners. It sets a framework: assess each piece of equipment's condition, then service it on an interval that matches that condition. Your insurer or corporate safety policy may reference it directly.
Heat is hard on electrical gear. Antelope Valley summers regularly reach the high 90s°F, and warehouses and manufacturing floors can run hotter inside. Heavy AC and process loads during heat waves push equipment harder at exactly the time failure is most costly. High desert wind also drives fine dust into enclosures. Scheduling an inspection before summer, or after the windy season, catches problems at the right time.
Loose connections heat up, heat breaks down insulation, and eventually something fails, often during peak load. That can mean an unplanned shutdown, damaged equipment, a fire risk and a bigger repair bill than the maintenance would have cost. Our post on why businesses rely on a licensed electrical contractor covers more on reducing downtime.
We set up preventative electrical maintenance programs based on your equipment and how critical it is, and we handle manufacturing facility electrical maintenance and warehouse electrical services across the Antelope Valley, Santa Clarita and the San Fernando Valley. B&M Electrical Services has 30+ years of experience as a licensed California contractor (C-1098584).
Our Services
Licensed lighting installation, panel upgrades, EV charger installation, new circuits & wiring, and troubleshooting & repairs for homes and businesses across the Antelope Valley and greater LA County.
Where We Work
Dispatched from Acton, CA, serving homes and businesses across the Antelope Valley, Santa Clarita and greater Los Angeles County.
Trusted By Homeowners
Brandon Rojas
I had a great experience with this electrical service. The team showed up on time, worked efficiently, and finished the job faster than I expected while still doing everything the right way. The price was very fair compared to other quotes I received, which made the whole experience even better because the quality of work was still top-notch. I also want to give a shout out to Barrett for being pr…
Loren Gibson
B&M has done a couple jobs for me in the past year, very pleased with the work. Fast, efficient, fair pricing and the work is always really clean. Definitely a returning customer.
Travis Steinbock
Barrett came out and gave me a good price on the work. They replaced my electrical panel and installed a disconnect for my AC unit. Then the next day, had a guy come out to patch up the wall and paint when the stucco dried. He also had the number of an AC technician for me to call to move a thermostat wire. Overall, great work and very communicative throughout the process.