This read-only Integer32 value, ranging 0 to 3000, reports the current draw on incoming Line 3 of the PDU's supply feed in units of 1/100 Amp, per the object's description. Unlike the per-outlet current readings, this measures the aggregate load on one of the PDU's whole input lines, so an admin uses it to check whether that entire feed is approaching its breaker rating. For example, a reading of 2400 on line3curr means Line 3 is carrying 24.00 Amps, and if that is close to the 30.00 Amp ceiling implied by the 0-3000 range, the admin knows to redistribute some outlets off that line.