Three-Phase AC Box - Phase Current Balancing - Appliance for Hadoop

Appliance for Hadoop 5 Platform Product and Site Preparation Guide

Product
Appliance for Hadoop
Published
February 2018
Content Type
Product Guide
Publication ID
B035-6030-075K
Language
English (United States)
Last Update
2018-05-03
Phase currents are not balanced on three-phase AC feeder boxes. If you have more than one cabinet with the three-phase AC feeder box, you will need to rotate the phase connections on each outlet to minimize the aggregate site imbalance. Consult this table for how to connect the phases to the receptacle in order to rotate the phase connections.
With a three-phase Wye AC feeder box, the phase imbalance results in a current on the neutral wire.
Three-Phase AC Box Current Balancing
Cabinet # Phase #1 Phase #2 Phase #3
Cabinet #1 L1 L2 L3
Cabinet #2 L3 L1 L2
Cabinet #3 L2 L3 L1
Cabinet #4 L1 L2 L3
Cabinet #5 L3 L1 L2
Cabinet #6 L2 L3 L1
Cabinet #7 and so on and so on and so on