What is switchgearin construction?

Switchgear uses individually compartmented, draw-out power circuit breakers built to ANSI/IEEE switchgear standards, is rear-accessible, and is designed so breakers can be racked out and serviced without shutting down the bus. A switchboard, listed to UL 891, uses fixed or group-mounted breakers, is usually front-accessible, and costs far less. Hospitals, data centers, and critical facilities specify switchgear for maintainability; most ordinary commercial buildings are served by switchboards.

Switchgear is engineered to order: each lineup is custom configured, the submittal and approval cycle happens before fabrication starts, and utility metering requirements add coordination. Lead times of many months are routine, and the gear is often the item that sets the building's power-on date. Estimators flag the lead time at bid, and project teams often release the gear submittal first for exactly this reason.

Yes. Free-standing gear sits on a concrete housekeeping pad, typically a few inches tall, coordinated between the electrical and concrete scopes. Multi-section lineups are heavy enough to need rigging equipment, a planned route into the electrical room, and sometimes a wall or slab opening left out of sequence. Those costs belong in the estimate as separate lines, and forgetting them is a classic takeoff miss.