A
RUVG
MANUAL
20 of 35
June 14
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.
All
penetrations
through
the
unit
walls
must
be
caulked
and
sealed
to
prevent
air
and/or
water
from
entering
the
unit.
