Electrical Installation
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IM 972-2 • MAVERICK I ROOFTOP SYSTEMS
Table 4: Minimum Wire Sizes for Given Wire Length
Unit MCA
Supply Wire Length in Feet
50
100
150
200
250
300
20
10
8
6
4
4
4
25
10
8
6
4
4
3
30
8
6
4
4
3
2
35
8
6
4
3
2
1
40
8
6
4
3
2
1
45
8
4
3
2
1
1/0
50
6
4
3
2
1
1/0
60
6
4
2
1
1/0
2/0
70
4
3
2
1/0
2/0
3/0
80
4
3
1
1/0
2/0
3/0
90
3
2
1/0
2/0
3/0
4/0
100
3
2
1/0
2/0
3/0
4/0
110
2
1
2/0
3/0
4/0
250
125
1
1
2/0
3/0
4/0
25
Table 5: Recommended Wire Sizes for Given Conduit and Hole Size
Wire Size, AWG
14
12
10
8
6
4
3
2
1
0
00
000
Conduit Size
1/2"
1/2"
1/2"
3/4"
1"
1"
1-1/4"
1-1/4"
1-1/2"
1-1/2"
2"
2"
Hole Size
7/8"
7/8"
7/8"
1-31/32"
1-23/64"
1-23/64"
1-23/32"
1-23/32"
1-31/32"
1-31/32"
2-15/32"
2-15/32"
Hook-Up
To wire unit, refer to
for location of
wiring entrances. Wiring to be done in the field between the
unit and devices not attached to the unit, or between separate
devices which are field installed and located, shall conform
with the temperature limitation for Type T wire [63°F rise
(35°C)] when installed in accordance with the manufacturer’s
instructions.
Internal Wiring
A diagram of the internal wiring of this unit is located on the
inside of control access panel and in this manual. If any of the
original wire as supplied with the unit must be replaced, the
wire gauge and insulation must be same as original wiring.
208 Volt Applications
Transformer is factory wired for 230 volts on 208/230 volt
models and must be changed for 208 volt applications. See
unit wiring diagram for 208 volt wiring.
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