HomeMy WebLinkAboutE001.pdfVail DAS Calc. By Curtis Carter
Node #1 Date 5/12/2014
Crown Castle Chk'd By BOC
PG-061 Date 5/12/2014
Load Type Description Quantity Each Total Voltage Wire Size
Copper Wire
Resistance
Aluminum
Wire
Resistance
1 Node 1 12000 W 12000 W 480 V AWG Ohms/1,000 Ft. Ohms/1,000 Ft.
1 V 14 3.100 5.170
12 2.000 3.200
10 1.200 2.000
12000 W
8 0.780 1.300
6 0.490 0.810
4 0.310 0.510
P = 12000 W 2 0.190 0.320
Vs = 240 V 1 0.150 0.250
I = 50 A 1/0 0.120 0.200
2/0 0.100 0.160
2% 3/0 0.077 0.130
VD MAX = 4.8 V 4/0 0.062 0.100
250 0.052 0.085
Individual Voltage Drop (VDi) = I x 2L x R/1000 ft 300 0.044 0.071
350 0.038 0.061
400 0.033 0.054
500 0.027 0.043
600 0.023 0.036
750 0.019 0.029
800 0.016 0.027
900 0.014 0.024
1000 0.015 0.023
Node 1
One-Way
Length
Wire
Resistance Load Current
Individual
Voltage Drop
FROM TO LOAD 1 LOAD 2 FT
Ohms/kFT (AMPS) (VOLTS)
Node #1 1 1 300 FT
0.310 25.00 4.650
0.00 0.000
0.00 0.000
0.00 0.000
0.00 0.000
0.00 0.000
4.65 V
TOTAL VOLTAGE DROP =
AWG
4
CIRCUIT RUN LOAD TYPE AND QUANTITY
Wire Size
VOLTAGE LOSS CALCULATIONS
Project
PWR Source
Client
Job #
Total Power (P) =
Current Drawn: I = P/VA
Allowable Voltage Drop of Supply Voltage (VS) =
(Where "L" is the One-Way distance (ft.) from the power source to
fixture. "R" is the wire resistance in ohms)
NEC Table 9 - Alternating-Current Resistance
2162 WEST GROVE PARKWAY
SUITE #400
PLEASANT GROVE, UTAH 84062
(801) 763-5100
1
06/23/14