User guide

PN# 500-13800
Page 9 Rev. D, 04/11
Appendix B
Wire Gauge Factoring
1.1 Remote Power Supply
 The Magnalock requires adequate voltage and current for proper operation.
 Resistance is created by the length and gauge (size) of the wire being used.
 An accurate estimated distance from the power supply to the opening is crucial.
 For superior operation the correct size gauge wire must be used.
 The devices used operate the best with the least amount of resistance on the source.
 Using the correct gauge wires protects against large voltage and current (load) losses.
 The gauge is determined by the wire distance, voltage and current of all devices.
1.2 Determining Wire Gauge
 Follow Example A (12VDC system) and Example B (24VDC system) below.
 Use Tables 1 and Table 2 to choose the correct wire gauge for the application.
1.2.1 Example A: (12VDC system)
Devices Used Amps (12VDC) Progressive Totals
M34R Magnalock 0.320 0.320
DK-26 Access 0.160 0.480
XMS Motion 0.050 0.530
EEB2 Timer 0.025 0.555
Total Current Rounded Up (Table 1) 0.600A
Using Table 1 (12VDC) Find: - Current Draw .600 Amps
- Wire Distance 200 Feet (One-Way)
Solution: 18 Gauge is indicated for proper installation
1.2.2 Example B: (24VDC system)
Using Table 2 (24VDC) Find: - Current Draw .300 Amps
- Wire Distance 1000 Feet (One-Way)
Solution: 16 Gauge is indicated for proper installation
Devices Used 24VDC Amps Progressive Totals
M34R Magnalock 0.170 0.170
DK-11 Access 0.070 0.240
XDT-24 Delay 0.050 0.290
Total Current Rounded Up (Table 2) 0.300A