A
XES SC MANUAL
IOM-58
20 of 30
June 14 R5
Recommended 24V Field Wiring Size:
Copper conductors only
Circuit
Load
(Amps)
(1)
Maximum Total Length of Run
< 50 Ft
< 100 Ft
< 150 Ft
< 200 Ft
< 250 Ft
< 300 Ft
< 350 Ft
< 400 Ft
< 450 Ft
< 500 Ft
(~ 15 m)
(~ 30 m)
(~ 45 m)
(~ 60 m)
(~ 75 m)
(~ 90 m)
(~ 105 m) (~ 120 m) (~ 135 m) (~ 150 m)
1
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
16 AWG
14 AWG
14 AWG
14 AWG
12 AWG
2
16 AWG
16 AWG
16 AWG
14 AWG
12 AWG
12 AWG
12 AWG
10 AWG
10 AWG
10 AWG
3
16 AWG
16 AWG
14 AWG
12 AWG
12 AWG
10 AWG
10 AWG
10 AWG
4
16 AWG
14 AWG
12 AWG
10 AWG
10 AWG
10 AWG
5
16 AWG
12 AWG
12 AWG
10 AWG
6
16 AWG
12 AWG
10 AWG
10 AWG
7
14 AWG
12 AWG
10 AWG
8
14 AWG
10 AWG
10 AWG
9
14 AWG
10 AWG
10
12 AWG
10 AWG
11
12 AWG
10 AWG
12
12 AWG
10 AWG
13
12 AWG
14
12 AWG
15
12 AWG
Notes:
1)
The field wiring load depends on the actual load on a particular control circuit the field wiring is
connected to. Refer to the internal wiring diagram of the unit.
2)
The table above is based on a maximum 10% voltage drop on a 24V control circuit. Wire size was
calculated using the following formula:
CM = (25 x I x L ) / V
Where
CM
is circular mils of conductor for a constant load of
I
amps, wire length
L
in feet from the
unit to the field device and back, and voltage drop
V
.
When connecting to a three phase power supply, check for the correct rotation of all motors and fans. If
the rotation is incorrect, reverse the rotation at the incoming power only. All electrical conduit outlets in
the control panel must be sealed to prevent moist building air from migrating to the control panel.
DO NOT install any devices in a manner that interfere with access to the rating plate or door opening.
Replacement wiring must be equivalent to original wire. See field wiring diagram for requirements for
shielded or twisted pair wire for solid state devices.