Megger is the manufacturer of meter test jacks, e-z test 99800 series. Meter test jacks are designed to increase safety and to simplify testing of socket-type watthour meters. They feature dead-front construction and a unique, simplified connection system. There are four types of meter test jacks that are available for safe, convenient and efficient field testing of virtually all commonly used socket-type meters. The product is molded from a tough, glass-impregnated polycarbonate; meter test jacks can withstand the rigors of daily field use. There are time-proven, lever-actuate cams that are used to firmly connect the meter blades to the test jack. A husky bypass bus is incorporated to handle customer loads, even at extended-range meter installations that use the new 320-ampere, self-contained meters. The salient features of meter test jacks: