ADC PowerWorx Power Distribution User Manual
Page 37
ADCP-80-575 • Issue 2 • December 2006
Page 31
© 2006, ADC Telecommunications, Inc.
APPENDIX A: ALLOWABLE AMPACITIES OF INSULATED CONDUCTORS
This appendix provides guidelines for selecting AWG wire size based on the temperature rating
of the conductor and the anticipated load. The information contained is from Table 310-16 of
the National Electrical Code document, ANSI/NPFA 70 (1978).
Note: Information for aluminum conductors has been omitted from the table here
because copper conductors only are recommended for use with the ADC panel.
Table 310-16 (NEC): Allowable Ampacities of Insulated Conductors, Rated O Through 2000 Volts, 60
° to
90
°C (140° to 194°F), Not More Than Three Current-Carrying Conductors in Raceway or Cable or Earth
(Directly Buried), Based on Ambient Temperature of 30
°C (86°F)
SIZE
TEMPERATURE RATING OF CONDUCTOR
AWG
KCMIL
60
°C
(114
°F)
60
°C
(114
°F)
60
°C
(114
°F)
TYPES
TW*,
UF*
TYPES
FEPW*,
RH*, RHW*,
THHW*,
THW*,
THWN*,
XHHW*,
USE*, ZW*
TYPES
TBS, SA,
SIS, FEP*,
FEPB*, MI,
RHH*, RHW-2,
THHN*,
THHW*, THW-2*,
THWN-2*,
USE-2,
XHH,
XHHW*
XHHW-2
ZW-2
18
....
....
14
16
....
....
18
14
20*
20*
25*
12
25*
25*
30*
10
30
35*
40*
8
40
50
55
6
55
65
75
4
70
85
95
3
85
100
110
2
95
115
130
1
110
130
150
1/0
125
150
170
2/0
145
175
195
3/0
165
200
225
4/0
195
230
260
250
215
255
290
300
240
285
320
350
260
310
350
400
280
335
380