O’Hare Guard Post 1H

Guard Post 1H’s booth was old and had to be replaced while the airport’s security work and the traffic around the post carried on, so every shutdown of the power had to be planned around them.

The new booth is a 92-square-foot prefabricated unit that runs on a 120/208-volt, single-phase, 100-amp panel, so the existing electrical service at the post had to be moved and adapted to feed it.

Working with McDonagh Construction, we coordinated each shutdown with the airport’s operations, disconnected the existing electrical service and moved it, then ran new conduit and conductors with the junction boxes, grounding and supports they needed.

Because the booth runs on a single 100-amp panel, we changed the feeder arrangement to suit it, then connected the lighting, the HVAC, the heating, the hand dryer, the water heater and the rest of the booth’s equipment so that every piece of it has a dedicated circuit.

Last, we completed the testing required before the booth could go into daily security use.

• Disconnect and relocate
• Conduit and conductors
• Junction boxes and supports
• Grounding
• A new 100-amp panel
• Connections and testing

The new booth is ready for daily security work, and the airport kept running while we replaced it.

• 92square feet of prefabricated security booth
• 100amp main electrical service, on a new panel