Hit Products Logic 3 User Manual
Page 21
For Wire Size Formula is: VD = C x R x
(2L) / 1000
"Ohms Law" Voltage Drop = Current x
Resistance in Ohms
VD = Voltage
Drop
C = Current (Solenoid
Amperage Draw)
R = Resistance (Wire Size “Voltage Loss”
Factor)
L = Length of distance between controller
and valve in feet
19
.35 amps inrush charts
Voltage Loss
.25 amps holding chart
Voltage Loss
Length
1 Valve
2 Valves
3 Valves 4 Valves
Length
1 Valve
2 Valves
3 Valves
4 Valves
Wire Size 10
1.02 R factor
Wire Size 10
1.02 R factor
100
0.071
0.143
0.214
0.286
100
0.051
0.102
0.153
0.204
200
0.143
0.286
0.428
0.571
200
0.102
0.204
0.306
0.408
300
0.214
0.428
0.643
0.857
300
0.153
0.306
0.459
0.612
400
0.286
0.571
0.857
1.142
400
0.204
0.408
0.612
0.816
500
0.357
0.714
1.071
1.428
500
0.255
0.510
0.765
1.020
600
0.428
0.857
1.285
1.714
600
0.306
0.612
0.918
1.224
700
0.500
1.000
1.499
1.999
700
0.357
0.714
1.071
1.428
800
0.571
1.142
1.714
2.285
800
0.408
0.816
1.224
1.632
900
0.643
1.285
1.928
2.570
900
0.459
0.918
1.377
1.836
1000
0.714
1.428
2.142
2.856
1000
0.510
1.020
1.530
2.040
Wire Size 12
1.62 R factor
Wire Size 12
1.62 R factor
100
0.113
0.227
0.340
0.454
100
0.081
0.162
0.243
0.324
200
0.227
0.454
0.680
0.907
200
0.162
0.324
0.486
0.648
300
0.340
0.680
1.021
1.361
300
0.243
0.486
0.729
0.972
400
0.454
0.907
1.361
1.814
400
0.324
0.648
0.972
1.296
500
0.567
1.134
1.701
2.268
500
0.405
0.810
1.215
1.620
600
0.680
1.361
2.041
2.722
600
0.486
0.972
1.458
1.944
700
0.794
1.588
2.381
3.175
700
0.567
1.134
1.701
2.268
800
0.907
1.814
2.722
3.629
800
0.648
1.296
1.944
2.592
900
1.021
2.041
3.062
4.082
900
0.729
1.458
2.187
2.916
1000
1.134
2.268
3.402
4.536
1000
0.810
1.620
2.430
3.240
Wire Size 14
2.58 R factor
Wire Size 14
2.58 R factor
100
0.181
0.361
0.542
0.722
100
0.129
0.258
0.387
0.516
200
0.361
0.722
1.084
1.445
200
0.258
0.516
0.774
1.032
300
0.542
1.084
1.625
2.167
300
0.387
0.774
1.161
1.548
400
0.722
1.445
2.167
2.890
400
0.516
1.032
1.548
2.064
500
0.903
1.806
2.709
3.612
500
0.645
1.290
1.935
2.580
600
1.084
2.167
3.251
4.334
600
0.774
1.548
2.322
3.096
700
1.264
2.528
3.793
5.057
700
0.903
1.806
2.709
3.612
800
1.445
2.890
4.334
5.779
800
1.032
2.064
3.096
4.128
900
1.625
3.251
4.876
6.502
900
1.161
2.322
3.483
4.644
1000
1.806
3.612
5.418
7.224
1000
1.290
2.580
3.870
5.160