GE OPTIMA MR360 Service Training page 42

The three phase alternating current for MCS and 8KW LCS must have the correct phase
position to operate. If the phase rotation is incorrect, there is no indication of power to the
system. Swap two phase leads, observing LOTO precautions. The 4KW LCS doesn't have
this requirement. On the top of system cabinet, there are only one terminal connected to
MCS or 8KW LCS so if the configuration has another 4KW LCS, it will get AC power from the
8KW LCS.
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