18 C3472M-C (9/10)
CABLE LENGTH AND WIRE GAUGE

24 V AC

The voltage supplied to the power terminals of the camera should be within 19.5 V AC and 28 V AC.

12 V DC

Use the formula below to calculate the power cable and power supply. The voltage supplied to the power terminals
of the camera should be within 10.8 V DC and 16 V DC.
10.8 V DC ≤ VA - 2 (R x I x L) ≤ 16 V DC
L = Cable length (m)
R = Resistance of copper wire (Ω/m)
VA = DC output voltage of power supply unit
I = DC current consumption (A). Refer to Specifications on page 25.

Table C. 24 V AC Recommended Cable Length and Thickness

Copper Wire Size (AWG) #24
(0.22 mm2)
#22
(0.33 mm2)
#20
(0.52 mm2)
#18
(0.83 mm2)
Length of Cable (approx.) (m) 20 30 45 75

Table D. 12 V DC Resistance of Copper Wire (at 20 °C)

Copper Wire Size (AWG) #24 (0.22 mm2) #22 (0.33 mm2) #20 (0.52 mm2) #18 (0.83 mm2)

Resistance Ω/m 0.078 0.050 0.03 0.018