EZ Meter-Pak™ metering equipment is available for use in high rise applications for connection to 800 to 5000 A I-Line™ or I-Line™ II plug-in busway installed as a vertical riser. 3-phase only EZM main devices in the form of a main circuit breaker or main fusible switch are available with an integral busway tap extending from the right or left side of the main device and phased to align with the busway for either neutral front or neutral back installations.