Weekly digest #117: commercial trends

What's driving commercial work right now

Commercial demand is shifting fast. Data centers, EV fleet depots, and cold storage builds are pulling crews away from traditional retail and office fit-outs. If you're bidding work in 2026, the load profile of the typical commercial job looks nothing like it did three years ago.

Continuous loads dominate. NEC 210.19(A) and 215.2(A) still require feeders and branch circuits to be sized at 125% of continuous load, but more of the load on a modern job qualifies as continuous. LED lighting, server racks, refrigeration compressors, and EVSE all run three hours or more without break.

Plan conductor sizing and OCPD selection accordingly. Undersized neutrals on 277/480 systems feeding heavy LED banks are still showing up in punch lists.

EV charging is now a commercial line item

Level 2 and DC fast charging have moved from amenity to core scope. Article 625 governs the install, and the 2023 cycle tightened a few things worth re-reading before your next pre-con.

NEC 625.40 requires each EVSE to be on an individual branch circuit. NEC 625.41 caps the EVSE rating at 80% of the branch circuit ampacity unless the equipment is listed for continuous duty at 100%. Most aren't, so size for 125%.

• Load management systems per 625.42(A) can let you install more ports on a constrained service. Get the listing documentation in writing before you commit to a panel schedule.
• GFCI protection per 625.54 applies to receptacle-fed EVSE rated 150V to ground or less, 50A or less. Hardwired units follow the equipment listing.
• Disconnects per 625.43 are required for EVSE rated over 60A or more than 150V to ground. Lockable in the open position, within sight, or capable of being locked.

For fleet depots, the service upgrade is usually the long pole. Coordinate with the utility early. A 2000A service swap can sit in queue for nine months in some markets.

Selective coordination keeps coming up

More AHJs are enforcing selective coordination on commercial gear, especially anything tied to emergency or legally required standby systems. NEC 700.32 and 701.32 require selective coordination with all supply-side overcurrent devices.

This is not just a hospital or high-rise concern anymore. Mid-size commercial buildings with elevators classed as legally required standby (NEC 701) get caught by this. So do data closets fed from 700 systems.

If your one-line shows a 100A breaker downstream of a 400A main with no time-current overlap analysis, expect the inspector to ask. Get coordination study results stamped before rough-in.

Working space and clearances are getting cited more

Commercial mechanical rooms keep shrinking while the gear keeps growing. NEC 110.26 working space violations are one of the top three citation categories on commercial finals in several jurisdictions.

The basics haven't changed, but enforcement has tightened. Condition 1 working depth for 0 to 150V is 3 feet. Condition 2 is 3.5 feet. Condition 3 is 4 feet. Width is 30 inches or width of equipment, whichever is greater. Height is 6.5 feet or height of equipment.

1. Verify working space before setting gear, not after. Moving a 1200A switchboard 6 inches after the housekeeping pad is poured is a bad day.
2. Dedicated equipment space per 110.26(E) extends 6 feet above the equipment or to the structural ceiling, whichever is lower. No piping, ducts, or foreign systems.
3. Illumination per 110.26(D) is required for indoor service equipment, switchboards, panelboards, and motor control centers. Battery backup is not required, but the lighting cannot be controlled by automatic means only.

GFCI expansion in commercial kitchens and similar spaces

NEC 210.8(B) keeps growing. The 2023 code expanded GFCI requirements for commercial occupancies to cover all 125V through 250V receptacles supplied by single-phase branch circuits rated 150V or less to ground, 50A or less, in a long list of locations.

That includes commercial kitchens, indoor damp and wet locations, locker rooms with showers, garages, accessory buildings, and within 6 feet of sinks. The 250V threshold is the big change. Three-phase 208V receptacles in kitchens now need GFCI protection too.

If you're rewiring a restaurant on a 2017 or 2020 cycle, check which code year your jurisdiction has actually adopted. Some are still on older cycles, but many are pulling forward fast.

GFCI breakers for 208V three-phase loads exist but are not always stocked locally. Lead time on a 60A 208V three-phase GFCI breaker can run four to six weeks. Order on the rough-in PO, not the trim PO.

What to track this quarter

Three things worth watching for the rest of Q2 2026: copper pricing on feeder runs over 250 feet, transformer lead times for service upgrades, and AHJ adoption of the 2023 NEC. Each one can flip a bid from profitable to underwater if you miss it.

Keep your panel schedules clean, your coordination studies stamped, and your working space sacred. The job goes faster when the inspector has nothing to write up.