CombiMaster 120V Series –
User and Installation Manual
7.5.3 AC wiring of split-phase (two parallel units for each phase)
• Connect the AC input L1, N and PE of the Primary (L1) and Replica 1 (L1) unit in parallel by means
of a busbar. The cables (length and wire gauge) must be identical.
• Connect the AC input L2, N and PE of the Replica 2 (L2) and Replica 3 (L2) unit in parallel by means
of a busbar. The cables (length and wire gauge) must be identical.
• The AC input of each unit must be protected by means of properly sized circuit breakers (50A max)
that switch off simultaneously L and Neutral.
• An Equipment Leakage Circuit Interrupter (ELCI) must be installed with or in addition to the main
(shore) power disconnect circuit breaker. Check locally applicable regulations on this matter, such as
ABYC for marine applications.
Figure 16: wiring split-phase + parallel AC IN
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