Honeywell 5820XL manual Wire Distances Per Wire Gauge Using Copper Wire

Control Panel Installation

These cases are marked in the chart with an asterisk (*). Maximum length can never be more than 6,000 feet, regardless of gauge used. (The formula used to generate this chart is shown in the note below).

Table 4-1: Wire Distances Per Wire Gauge Using Copper Wire

Wiring Distance: SBUS Modules to Panel

Total Worst Case	22 Gauge	18 Gauge	16 Gauge	14 Gauge
Current Draw (amps)
0.100	1852 ft.	4688 ft.	* 6000 ft.	* 6000 ft.
0.200	926 ft.	2344 ft.	3731 ft.	5906 ft.
0.300	617 ft.	1563 ft.	2488 ft.	3937 ft.
0.400	463 ft.	1172 ft.	1866 ft.	2953 ft.
0.500	370 ft.	938 ft.	1493 ft.	2362 ft.
0.600	309 ft.	781 ft.	1244 ft.	1969 ft.
0.700	265 ft.	670 ft.	1066 ft.	1687 ft.
0.800	231 ft.	586 ft.	933 ft.	1476 ft.
0.900	206 ft.	521 ft.	829 ft.	1312 ft.
1.000 (Max)	185 ft.	469 ft.	746 ft.	1181 ft.

Note: The following formulas were used to generate the wire distance chart:

Maximum Resistance (Ohms) =	6.0 Volts
	Total Worst Case Current Draw (amps)
Maximum Wire Length (Feet) =	Maximum Resistance (Ohms)
(6000 feet maximum)		* 500
	Rpu

where: Rpu = Ohms per 1000 feet for various wire gauges (see table below)

Table 4-2: Typical Wire Resistance Per 1000 ft. Using Copper Wire

Wire Gauge	Ohms per 1000 feet (Rpu)
22	16.2
18	6.4
16	4.02
14	2.54

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