KNAACK POWERCREW is a 15-amp, in-box power supply that provides job-site power for operating tools, radios, phones and charging batteries. The power source comes from a standard three-prong/straight blade extension cord that plugs into the outside of the box. The PowerCrew in-box power supply is designed with several safety features, including a red LED that indicates power is on and an internal relay that provides open neutral protection. It is UL-approved and complies with OSHA recognized test standards, according to the company. The Knaack PowerCrew is sold as a pack of four in-box power supplies for $865. Contact: Knaack LLC, 420 E. Terra Cotta Ave., Crystal Lake, IL 60014. Tel: 800-456-7865. www.knaack.com
This article originally appeared in the April 2009 issue.