Pelco C654M-E (12/08) 3 The minimum acceptable voltage is calculated as follows 24.0 VAC, Wire

You can use Table D as a guide to determine the necessary wire gauge (AWG) for various cable distances that provide 24 VAC power. Or use it in a reverse fashion to determine the maximum allowable cable distance for a particular wire gauge. Table D applies when using two-conductor copper wire with characteristics similar to West Penn 221-227 unshielded cable. Calculations are based on a 10-percent voltage drop (generally the maximum allowable drop for AC-powered devices).

The minimum acceptable voltage is calculated as follows:

24.0VAC

–02.4 (10%)

21.6(Minimum Acceptable Voltage)

The minimum acceptable voltage used to create Table D was 21.6 V. Therefore, the 24-V output has an acceptable range from 24 V down to 21.6 V; the 28-V output’s acceptable range is from 28 V down to 21.6 V.

				Table D. Required Wire Gauge
				Required Wire Gauge Table (AWG)
				Equipment Loads (VA)
WIRE	CCD Camera	P/T480 Pan/Tilt	Indoor Spectra	PT570 Pan/Tilt	Esprit Pan/Tilt	Indoor XLS	CX9000 Rxr’s	Outdoor Spectra
(feet)
DIST
	10 VA	20 VA	30 VA	40 VA	50 VA	60 VA	70 VA	80 VA	90 VA	100 VA	200 VA
1000	12-14	12	*	*	*	*	*	*	*	*	*
	16-18	12-14	12-14	12	*	*	*	*	*	*	*
900	12-14	12	12	*	*	*	*	*	*	*	*
	16-18	14-16	12-14	12	12	*	*	*	*	*	*
800	12-14	12	12	*	*	*	*	*	*	*	*
	16-18	14-16	12-14	12	12	12	*	*	*	*	*
700	12-16	12	12	12	*	*	*	*	*	*	*
	18-20	14-16	12-14	12-14	12	12	*	*	*	*	*
600	12-16	12	12	12	*	*	*	*	*	*	*
	18-20	14-18	14-16	12-14	12-14	12	12	12	*	*	*
500	12-16	12-14	12	12	12	*	*	*	*	*	*
	18-20	16-18	14-16	12-14	12-14	12-14	12	12	12	*	*
400	12-18	12-14	12	12	12	12	12	*	*	*	*
	20-22	16-18	14-18	14-16	12-14	12-14	12-14	12	12	12	*
300	12-18	12-16	12-14	12	12	12	12	12	12	*	*
	20-22	18-20	16-18	14-18	14-16	14-16	12-14	12-14	12-14	12-14	*
200	12-20	12-18	12-16	12-14	12-14	12	12	12	12	12	*
	22	20-22	18-20	16-18	16-18	14-16	14-16	14-16	14-16	12-14	12-14
100	12-22	12-20	12-18	12-18	12-16	12-16	12-16	12-14	12-14	12-14	12
	*	22	20-22	20-22	18-20	18-20	18-20	16-18	16-18	12-14	12-14

XX-XX

XX-XX

Allowable Wire Gauge (AWG) Using 24-V Tap

Allowable Wire Gauge (AWG) Using 28-V Tap

*Distance and Load not recommended for any wire size from 12 to 22 (AWG)

8 C654M-E (12/08)