Honeywell AUTOMATIC CONTROL User Manual

ENGINEERING MANUAL OF AUTOMATIC CONTROL
GENERAL ENGINEERING DATA
484
ELECTRICAL CONDUCTORS
Tables 20, 21, and 22 are provided as a convenience to the
reader for reference only. In all cases the National Electrical
Code and local codes take precedence.
Table 20. Ampacity of Selected Conductors.
Table 21. Physical Constants of Electrical
Metallic Tubing.
Table 22. Physical Constants of Selected Conductors.
Rigid Conduit or
Tubing Flexible Conduit
Conduit
Trade
Size
Internal
Diameter
in Inches
Internal
Area in
Square
Inches
Internal
Diameter
in Inches
(Nominal)
Internal
Area in
Square
Inches
(Nominal)
3/8 N/A N/A 0.375 0.110
1/2 0.622 0.304 0.625 0.307
3/4 0.824 0.533 0.8125 0.518
1 1.049 0.864 1.00 0.785
1-1/4 1.380 1.496 1.250 1.227
1-1/2 1.610 2.036 1.500 1.767
2 2.067 3.356 2.00 3.142
2-1/2 2.469 4.788 2.500 4.909
3 3.068 7.393 3.00 7.069
3-1/2 3.548 9.887 3.500 9.621
4 4.026 12.730 4.000 12.566
4-1/2 4.506 15.946 N/A N/A
5 5.047 20.005
6 6.065 28.890
Cross -
Types TF, Types TFN,
Approximate dc Resistance
at 167F (75C)
section
TW, THW Types RHW, RHH THWN, THHN Copper
Wire
Size
AWG
of copper
Circular
Mills
Approx-
imate
Dia. in.
Approx-
imate
Area in
2
Approx-
imate
Dia. in.
2
Approx-
imate
Area n.
2
Approx-
imate
Dia. in.
Approx-
imate
Area in
2
Uncoated
Ohm/Mft
Coated
Ohm/Mft
Aluminum
Ohm/Mft
18
16
14
1620
2580
4110
0.106
0.118
0.131
0.0088
0.0109
0.0135
0.146
0.158
0.204
0.0167
0.0196
0.0327
0.089
0.100
0.105
0.0062
0.0079
0.0087
7.95
4.89
3.14
8.45
5.29
3.26
13.1
8.21
5.17
12
10
8
6530
10,380
16,510
0.148
0.168
0.245
0.0172
0.0222
0.0471
0.221
0.242
0.328
0.0384
0.0460
0.0845
0.122
0.153
0.218
0.0117
0.0184
0.0373
1.98
1.24
0.778
2.05
1.29
0.809
3.25
2.04
1.28
6
4
3
26,240
41,740
52,620
0.323
0.372
0.401
0.0819
0.1087
0.1263
0.397
0.452
0.481
0.1238
0.1605
0.1817
0.257
0.328
0.356
0.0519
0.0845
0.0995
0.491
0.308
0.245
0.510
0.321
0.254
0.808
0.508
0.403
2
1
1/0
66,360
83,690
105,600
0.433
0.508
0.549
0.1473
0.2027
0.2367
0.513
0.588
0.629
0.2067
0.2715
0.3107
0.388
0.450
0.491
0.1182
0.1590
0.1893
0.194
0.154
0.122
0.201
0.160
0.127
0.319
0.253
0.201
Copper
Wire
Size
AWG
Type
TW
1
Types
RHW
1
,
THW
1
,
TWHN
1
Types
RHH
1
,
THHN
1
Fixture
wire types
TF, TFF,
TFN, TFFN
18
16
14
—
—
20
—
—
20
14
18
25
6
8
17
12
10
8
25
30
40
25
35
50
30
40
55
23
28
—
6
4
3
55
70
85
65
85
100
75
95
110
—
—
—
2
1
1/0
95
110
125
115
130
150
130
150
170
—
—
—
1 Unless specifically permitted in National Electrical Code
the overcurrent protection for conductors marked (1)
shall not exceed 15 Amperes for 14 AWG, 20 Amperes
for 12 AWG, and 30 Amperes for 10 AWG.
NOTE: Ampacity is the current in amperes a conductor
can carry continuously without exceeding its
temperature rating while operating under specified
conditions. The values shown are maximum for three
conductors in raceway in open air.

Honeywell AUTOMATIC CONTROL Specifications

General

Brand	Honeywell
Model	AUTOMATIC CONTROL
Category	Controller
Language	English