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Electrical Engineering Terms U

Ufer ground.

Name after the man who invented and tested it, a Ufer ground is a grounding electrode consisting of at least 20 feet (6 m) of 1/2-inch (13 mm) rebar (either a continuous single bar or shorter lengths tied-wired together) or of at least 20 feet of wire-size 4 AWG or larger copper wire embedded in a concrete footing or piling.

Ungrounded.

An electrical power distribution system that is not connected to earth ground or to a conductive body that extends the ground connection.

Uninterruptible Power Supply (UPS).

A self-contained, battery backed-up regulated power supply.

About Ahmed Faizan

Mr. Ahmed Faizan Sheikh, M.Sc. (USA), Research Fellow (USA), a member of IEEE & CIGRE, is a Fulbright Alumnus and earned his Master’s Degree in Electrical and Power Engineering from Kansas State University, USA.

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