Securitron SAM - Manual (Page 15)

PN# 500-10440
Page 15 Rev. F, 02/12
1.2.2 Example B: (24VDC system)
Using Table 2 (24VDC) Find: - Current Draw
.600 Amps
- Wire Distance 1000 Feet [305m] (One-Way)
Solution: 14 Gauge is indicated for proper installation
TO SOLVE: INTERSECT ROW (Total Current Draw) and INTERSECTING COLUMN (One-
Way Wire Distance).
1.00A
20
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
12
Gauge
10
Gauge
10
Gauge
8
Gauge
.800A
22
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
12
Gauge
10
Gauge
10
Gauge
8
Gauge
.600A
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
12
Gauge
10
Gauge
.400A
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
12
Gauge
.300A
24
Gauge
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
C
U
R
R
E
N
T
.200A
24
Gauge
22
Gauge
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
50’
[15m]
100’
[30m]
150’
[46m]
200’
[61m]
300’
[91m]
400’
[122m]
500’
[152m]
750’
[229m]
1000’
[305m] 12VDC
WIRE DISTANCE
Table 1
1.00A
22
Gauge
20
Gauge
20
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
12
Gauge
10
Gauge
.800A
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
12
Gauge
.600A
24
Gauge
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
14
Gauge
.400A
24
Gauge
22
Gauge
22
Gauge
22
Gauge
20
Gauge
18
Gauge
18
Gauge
16
Gauge
14
Gauge
.300A
24
Gauge
24
Gauge
22
Gauge
22
Gauge
22
Gauge
20
Gauge
20
Gauge
18
Gauge
16
Gauge
C
U
R
R
E
N
T
.200A
24
Gauge
24
Gauge
24
Gauge
22
Gauge
22
Gauge
22
Gauge
20
Gauge
20
Gauge
18
Gauge
50’
[15m]
100’
[30m]
150’
[46m]
200’
[61m]
300’
[91m]
400’
[122m]
500’
[152m]
750’
[229m]
1000’
[305m] 24VDC
WIRE DISTANCE
Table 2
 The Wire Distance indicated on the table above represents a 2-wire “One-Way” length from
the power supply source to entryway installation area.
 The Gauge values specified on the table above represent a 2-wire “Round Trip” length from
the power supply source to entryway installation and returning back to the power supply
source.
IMPORTANT
THE 200’ [61m] WIRE RUN IN EACH TABLE FACTORS A 400’ [122m] ROUND TRIP
Devices Used 24VDC Amps
SAM Magnalock 0.320
DK-11 Access 0.070
XDT-24 Delay 0.050
Total Current (0.440A) Rounded Up = 0.600A