Lambda ESKI Instruction Manual page 13

The current from the supply can be monitored by reading the voltage between
Pins 4 & 2 of P1. This voltage is set for 1 volt = 10 Amps when received from the
factory and can be loaded with a resistance of 10k Ohms.
Figure 4 3 Phase External Control Hookup
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83-475-001 Rev. D