Wire Sizing For 6815; Sk Modules - Honeywell 6820EVS Installation And Optimization Manual

LS10144-001SK-E
7.5.2

Wire Sizing for 6815

The SLC requires use of a specific wire type, depending on mode of operation, to ensure proper circuit
functioning. Wire size should be no smaller than 18 AWG and no larger that 12 AWG wire. The wire size
depends on the length of the SLC circuit. It is recommended that all wiring be twisted-pair to minimize the
effects of electrical interference.
7.5.3

SK Modules

The 6820 or 6820EVS SLC can be programmed to operate in SK mode. While shielded wire is not required, it is
recommended that all SLC wiring be twisted-pair to minimize the effects of electrical interference. Use Table 7-
4 to determine the specific wiring requirements for the SLC.
Wire Requirements
RECOMMENDED: Twisted-unshielded pair,
12 to 18 AWG (3.31mm to 0.82 MM). 50
ohms, maximum per length of Style 6 & 7. 50
ohms per branch maximum for Style 4 loop.
Untwisted, unshielded wire, in conduit or
outside of conduit.
Twisted, shielded pair
Note:
• Shields must be isolated from ground
• Shields should be broken at each device
Note:
Maximum total capacitance of all SLC wiring (both between conductors and from any conductor to ground)
should not exceed 0.5 micro farads.
Table 7-3: Maximum wiring distance for SD devices
Wire Gauge
22 AWG
18 AWG
16 AWG
14 AWG
Table 7-4 SLC Wiring Requirements for SK modules
Distance in Feet (meters)
12,500 ft. (3,810 m)
9,500 ft. (2895.6 m)
6,000 ft. (1,828.8 m)
3,700 ft. (1,127.76 m)
5,000 ft. (1,528 m)
3,700 ft. (,127.76 m)
5,000 ft. (1524 m)
3,700 ft. (1,127.76 m)
SK, SD and SWIFT™ Wireless SLC Device Installation
Max. Distance for SD
1500 feet
3900 feet
6200 feet
10,000 feet
12 AWG (3.31 mm)
14 AWG (2.08 mm)
16 AWG (1.31 mm)
18 AWG (0.82 mm)
12 to 16 AWG (3.31 mm to 1.31 mm)
18 AWG (0.82 mm)
12 to 16 AWG (3.31 mm to 1.31 mm)
18 AWG (0.82 mm)
7-4
Wire Type