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Steel Conduit Voltage Drop Multiplier
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Steel Conduit Voltage Drop Multiplier
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Description
Table
Projects
Multiplier for steel conduit voltage drop calculations
Wire Size
Ampacity
Direct Current
Three Phase
(60 Cycle, Lagging Power Factor)
Single Phase
(60 Cycle, Lagging Power Factor)
Type
Type
Type
T, TW
(60 degrees Celsius Wire)
RH,
THWN,
RHW,
THW
(75 degrees Celsius Wire)
RHH,
THHN,
XHHW
(90 degrees Celsius Wire)
100%
90%
80%
70%
60%
100%
90%
80%
70%
60%
14
20
20
25
6140
5369
4887
4371
3848
3322
6200
5643
5047
4444
3836
12
25
25
30
3860
3464
3169
2841
2508
2172
4000
3659
3281
2897
2508
10
30
35
40
2420
2078
1918
1728
1532
1334
2400
2214
1995
1769
1540
8
40
50
55
1528
1350
1264
1148
1026
900
1560
1460
1326
1184
1040
6
55
65
75
982
848
812
745
673
597
980
937
860
777
690
4
70
85
95
616
536
528
491
450
405
620
610
568
519
468
3
85
100
110
490
433
434
407
376
341
500
501
470
434
394
2
95
115
130
388
346
354
336
312
286
40
409
388
361
331
1
110
130
150
308
277
292
280
264
245
320
337
324
305
283
0
125
150
170
244
207
228
223
213
200
240
263
258
246
232
0
145
175
195
193
173
196
194
188
178
200
227
224
217
206
0
165
200
225
153
136
162
163
160
154
158
187
188
184
178
0
195
230
260
122
109
136
140
139
136
126
157
162
161
157
250
215
255
290
103
93
123
128
129
128
108
142
148
149
148
300
240
285
320
86
77
108
115
117
117
90
125
133
135
135
350
260
310
350
73
67
98
106
109
109
78
113
122
126
126
400
280
335
380
64
60
91
99
103
104
70
105
114
118
120
500
320
380
430
52
50
81
90
94
96
58
94
104
109
111
600
355
420
475
43
43
75
84
898
92
50
86
97
103
106
750
400
475
535
34
36
68
78
84
88
42
79
91
97
102
1000
455
545
615
26
31
62
72
78
82
36
72
84
90
95
See also
Calculations
Solving for Voltage Drop in Three-wire Three-Phase Circuits
Solving for Voltage Drop in Two-wire Single-Phase Circuits
Guides
Sizing conductors to prevent excess voltage drop
Finding Voltage Drop for given conductor size
Tables
Maximum number of conductors in rigid PVC conduit, schedule 40
Maximum number of conductors in rigid PVC conduit, schedule 80
Forms
Medium-voltage Switchgear Test Form
Definitions
Offset Bend
Back-to-back Bend
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