Vertiv Liebert AC8 - Page 24

Connection Supported Wire Type Maximum Wire Length Rating
Digital
Input/
EPOP
18-22 AWG Stranded &
Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
750 ft. (225m)
Dry Contact
(24VDC,
10 mA)
Digital
Output/
Control
Relay
18-22 AWG Stranded &
Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
18 AWG*
(recommended)
20 AWG 22 AWG
24VAC@3A
@3A 50 ft. (15m)
@2A 100 ft. (30m)
@1A 200 ft. (60m)
@3A 40 ft.
(12m)
@2A 60 ft.
(18m)
@1A 100 ft.
(30m)
@3A 25 ft.
(7m)
@2A 35 ft.
(10m)
@1A 75 ft.
(23m)
Analog Input
2-Wire
Transducer
18-22 AWG Stranded &
Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
750 ft. (225m)
4-20 mA
Signal
Input
Selectable
Power Source
(12/24VDC)
Analog Input
4-Wire
Transducer
18-22 AWG Stranded &
Unshielded
18 AWG* (recommended)
Non Plenum - Belden 8489
Plenum - Belden 88489
750 ft. (225m)
4-20 mA
Signal
Input
Selectable
Power Source
(12/24VDC)
Common
Alarm
Output
18-22 AWG Stranded &
Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
18 AWG*
(recommended)
20 AWG 22 AWG
24VAC
@3A
@3A 50 ft. (15m)
@2A 100 ft. (30m)
@1A 200 ft. (60m)
@3A 40 ft.
(12m)
@2A 60 ft.
(18m)
@1A 100 ft.
(30m)
@3A 25 ft.
(7m)
@2A 35 ft.
(10m)
@1A 75 ft.
(23m)
Communication
RS232
Null Modem Cable 50 ft. (15m) N/A
Communication
EIA422
Liebert
SiteScan
18-22 AWG Stranded &
Shielded
22 AWG* (recommended)
Non Plenum - Belden 9461
Plenum - Belden 88761
1000 ft. (300m) N/A
Communication
EIA485
18-22 AWG Stranded &
Shielded
22 AWG* (recommended)
Non Plenum - Belden 9461
Plenum - Belden 88761
3000 ft. (900m) N/A
Table 3.1 Wiring specifications
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