Electrical Box. A centralized temporary supply box for power on a new construction site saves wiring time and improves worker safety. Cooper's Arrow Hart RhinoBoxes are elevated NEMA 3R-rated weather-resistant enclosures containing onboard circuit-breakers and GFCI-protected receptacles. They come in various configurations for indoor and outdoor use. The outdoor model shown — the RB301A — has 50-amp pass-through connections, one 30-amp receptacle, and six 20-amp receptacles. Units can be connected to a generator or a drop power line and can be daisy-chained together. Prices range from $400 to $500 without a cord set. Cooper, 866/853-4293. www.cooperwiringdevices.com

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