6/28/2011 DOC.NO.: 150D - 1
P/N RE 150D Rev. No. 1
28
Chapter 8: Wire Requirements
Connecting external system accessories to the RE - 150
main circuits must be carefully considered to ensure proper
operation. It is important to use the correct type of wire; wire
gauge and wire run length per each RE - 150 circuits.
Reference the chart below to specify wire requirements and
limitations for each RE - 150.
TABLE 8-1: Wire Requirements
CIRCUIT TYPE
CIRCUIT
FUNCTION
WIRE TYPE AND
LIMITATIONS
RECOMMENDED
MAX. DISTANCE
Feet (meters)
WIRE GUAGE
Initiating Device
Circuit
Connects to
Initiating
Devices
Untwisted,
unshielded
wire
(Do not exceed
50 ohms)
10,000 (3,000 m)
8,000 (2,400 m)
4,875 (1,480 m)
3,225 (975 m)
12 AWG (3.25 mm2) Belden
9583
WPW999
14 AWG (2.00 mm2) Belden
9581
WPW995
16 AWG (1.30 mm2) Belden
9575
WPW991
18 AWG (0.75 mm2) Belden
9574
WPW975
24 VDC
resettable,
nonresettable
Connects to
annunciators
and other
accessories
No more than 1.2
volt drop
allowed from
supply source
to end of any
branch
Distance
limitation set by
1.2 volt
maximum
line drop
12 AWG (3.25 mm
2
) - 18 AWG
(0.75 mm
2
)
