A threshold that indicates the power consumption of
the load has entered an overload condition. It is
represented in Amps. A warning will be issued when the
load is greater than or equal to the threshold value.
Minimum value must be greater than or equal to the value
returned by the rPDULoadPhaseConfigNearOverloadThreshold OID.
Maximum value must be less than or equal to the value
returned by the rPDULoadDevMaxPhaseLoad OID.