Wire Size Specifier
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COPPER WIRE SPECIFIER BY R. JAMES & R. PEREZ INput Voltage= INput Amperage= INput Feet=
24.00 volts 10.00 amperes 250.00 feet of wire in the COMPLETE circuit INput Wire Gauge 2
Volts Thru= Volts Loss=
23.61 volts 0.39 volts
Power Input= Power Lost= Power Transferred= Efficiency in %= V lost in %
240.00 watts 3.91 watts 236.09 watts 98.37% 1.65%
Shunts Shunt length in feet
0.1Ω 0.01Ω 639.881 63.988 ma=mv*10 ma=mv*100
Feet/Ω 6398.81 Ω/Foot 0 Ω/Ft. X # of FT.=
0.001Ω 6.399 Amps=mv
0.0001Ω 0.640 Amp=mv*10
0.04
0.00001Ω 0.064 A=mv*100
12 Volt Wire Sizing Chart 15 .975
R O U N D T R I P W I R E L E N G T H in F E E T
Specification Voltage is 15.00 VDC Wiring is specified for a power efficiency of 97.5% and/or correct ampacity
PV ARRAY CURRENT IN AMPERES. 6 12 15 18 21 24 30 36 25 13 10 10 9 8 7 6 6 30 13 10 9 8 7 7 6 5 35 12 9 8 7 7 6 5 4 40 11 8 7 7 6 5 4 4 45 11 8 7 6 6 5 4 3 50 10 7 7 6 5 4 4 3 60 10 7 6 5 4 4 3 2 70 9 6 5 4 4 3 2 1 80 8 5 4 4 3 2 1 1 90 8 5 4 3 3 2 1 0 100 7 4 4 3 2 1 1 0 125 7 4 3 2 1 1 0 1 150 6 3 2 1 0 0 1 2 175 5 2 1 0 0 1 2 3 200 4 1 1 0 1 1 2 3 225 4 1 0 1 1 2 3 250 4 1 0 1 2 2 3 275 3 0 1 2 2 3 300 3 0 1 2 3 3 325 2 1 2 2 3 350 2 1 2 3 3 375 2 1 2 3 400 1 1 2 3 425 1 2 3 450 1 2 3 475 1 2 3 500 1 2 3 600 0 3 700 1
42 48 54 60 66 72 78 84 90 96 102 108 114 120 5 4 4 4 3 3 2 2 2 1 1 0 0 0 4 4 3 3 2 2 2 1 1 1 0 0 0 0 4 3 3 2 2 1 1 1 0 0 0 0 1 1 3 2 2 1 1 1 0 0 0 1 1 1 1 1 3 2 1 1 1 0 0 0 1 1 1 2 2 2 2 1 1 1 0 0 1 1 1 1 2 2 2 2 1 1 0 0 1 1 1 2 2 2 3 3 3 3 1 0 0 1 1 2 2 2 3 3 3 3 0 1 1 1 2 2 3 3 3 0 1 2 2 2 3 3 3 1 1 2 2 3 3 2 2 3 3 3 3 3 Specification Voltage 15 VDC for 12 VDC PV Applications Wiring is specified for a power efficiency of 97.5% and/or correct ampacity Codes The body of the table contains the Wire Gauge Number "0" Wire is designated by 0 "00" Wire is designated by 1 "000" Wire is designated by 2 "0000" Wire is designated by 3 Wiring power efficiency is specified at 68°F. If ambient temperature is > 90°F., use the next gauge larger wire
14
14 12 12 10
8
6
6
6
4
4
4
2
2
2
2
0
0
0
0
0
0
24 Volt Wire Sizing Chart 30 .975
R O U N D T R I P W I R E L E N G T H in F E E T
Specification Voltage is 30.00 VDC Wiring is specified for a power efficiency of 97.5% and/or correct ampacity
PV ARRAY CURRENT IN AMPERES. 6 12 15 18 21 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 25 14 13 12 12 10 8 6 6 6 6 6 6 4 4 4 2 2 2 2 0 0 0 30 14 13 12 11 10 8 6 6 6 6 6 6 4 4 4 2 2 2 2 0 0 0 35 14 12 11 10 10 8 6 6 6 6 6 5 4 4 4 2 2 2 2 0 0 0 40 14 11 10 10 9 8 6 6 6 5 5 4 4 4 3 2 2 2 2 0 0 0 45 14 11 10 9 9 8 6 6 6 5 4 4 4 3 3 2 2 2 2 0 0 0 50 13 10 10 9 8 7 6 6 5 4 4 4 3 3 2 2 2 1 1 0 0 0 60 13 10 9 8 7 7 6 5 4 4 3 3 2 2 2 1 1 1 0 0 0 0 70 12 9 8 7 7 6 5 4 4 3 3 2 2 1 1 1 0 0 0 0 1 1 80 11 8 7 7 6 5 4 4 3 2 2 1 1 1 0 0 0 1 1 1 1 1 90 11 8 7 6 6 5 4 3 3 2 1 1 1 0 0 0 1 1 1 2 2 2 100 10 7 7 6 5 4 4 3 2 1 1 1 0 0 1 1 1 1 2 2 2 2 125 10 7 6 5 4 4 3 2 1 1 0 0 1 1 2 2 2 2 3 3 3 3 150 9 6 5 4 3 3 2 1 0 0 1 1 2 2 2 3 3 3 175 8 5 4 3 3 2 1 0 0 1 1 2 2 3 3 3 200 7 4 4 3 2 1 1 0 1 1 2 2 3 3 225 7 4 3 2 2 1 0 1 1 2 3 3 3 250 7 4 3 2 1 1 0 1 2 2 3 3 Specification Voltage 30 VDC 275 6 3 2 1 1 0 1 2 2 3 3 for 24 VDC PV Applications 300 6 3 2 1 0 0 1 2 3 3 325 5 2 1 1 0 1 2 2 3 Wiring is specified for a power efficiency of 97.5% 350 5 2 1 0 0 1 2 3 3 and/or correct ampacity 375 5 Codes 2 1 0 1 1 2 3 400 4 1 1 0 1 1 2 3 The body of the table contains the Wire Gauge Number 425 4 1 0 1 1 2 3 "0" Wire is designated by 0 450 4 1 0 1 1 2 3 "00" Wire is designated by 1 475 4 1 0 1 2 2 3 "000" Wire is designated by 2 500 4 1 0 1 2 2 3 "0000" Wire is designated by 3 600 3 0 1 2 3 3 700 2 Wiring power efficiency is specified at 68°F. 1 2 3 3 800 1 1 2 3 If ambient temperature is > 90°F., use the next gauge larger wire
14
14 12 12 10
8
6
6
6
4
4
4
2
2
2
2
0
0
0
0
0
0
24.00 volts 10.00 amperes 250.00 feet of wire in the COMPLETE circuit INput Wire Gauge 2
Volts Thru= Volts Loss=
23.61 volts 0.39 volts
Power Input= Power Lost= Power Transferred= Efficiency in %= V lost in %
240.00 watts 3.91 watts 236.09 watts 98.37% 1.65%
Shunts Shunt length in feet
0.1Ω 0.01Ω 639.881 63.988 ma=mv*10 ma=mv*100
Feet/Ω 6398.81 Ω/Foot 0 Ω/Ft. X # of FT.=
0.001Ω 6.399 Amps=mv
0.0001Ω 0.640 Amp=mv*10
0.04
0.00001Ω 0.064 A=mv*100
12 Volt Wire Sizing Chart 15 .975
R O U N D T R I P W I R E L E N G T H in F E E T
Specification Voltage is 15.00 VDC Wiring is specified for a power efficiency of 97.5% and/or correct ampacity
PV ARRAY CURRENT IN AMPERES. 6 12 15 18 21 24 30 36 25 13 10 10 9 8 7 6 6 30 13 10 9 8 7 7 6 5 35 12 9 8 7 7 6 5 4 40 11 8 7 7 6 5 4 4 45 11 8 7 6 6 5 4 3 50 10 7 7 6 5 4 4 3 60 10 7 6 5 4 4 3 2 70 9 6 5 4 4 3 2 1 80 8 5 4 4 3 2 1 1 90 8 5 4 3 3 2 1 0 100 7 4 4 3 2 1 1 0 125 7 4 3 2 1 1 0 1 150 6 3 2 1 0 0 1 2 175 5 2 1 0 0 1 2 3 200 4 1 1 0 1 1 2 3 225 4 1 0 1 1 2 3 250 4 1 0 1 2 2 3 275 3 0 1 2 2 3 300 3 0 1 2 3 3 325 2 1 2 2 3 350 2 1 2 3 3 375 2 1 2 3 400 1 1 2 3 425 1 2 3 450 1 2 3 475 1 2 3 500 1 2 3 600 0 3 700 1
42 48 54 60 66 72 78 84 90 96 102 108 114 120 5 4 4 4 3 3 2 2 2 1 1 0 0 0 4 4 3 3 2 2 2 1 1 1 0 0 0 0 4 3 3 2 2 1 1 1 0 0 0 0 1 1 3 2 2 1 1 1 0 0 0 1 1 1 1 1 3 2 1 1 1 0 0 0 1 1 1 2 2 2 2 1 1 1 0 0 1 1 1 1 2 2 2 2 1 1 0 0 1 1 1 2 2 2 3 3 3 3 1 0 0 1 1 2 2 2 3 3 3 3 0 1 1 1 2 2 3 3 3 0 1 2 2 2 3 3 3 1 1 2 2 3 3 2 2 3 3 3 3 3 Specification Voltage 15 VDC for 12 VDC PV Applications Wiring is specified for a power efficiency of 97.5% and/or correct ampacity Codes The body of the table contains the Wire Gauge Number "0" Wire is designated by 0 "00" Wire is designated by 1 "000" Wire is designated by 2 "0000" Wire is designated by 3 Wiring power efficiency is specified at 68°F. If ambient temperature is > 90°F., use the next gauge larger wire
14
14 12 12 10
8
6
6
6
4
4
4
2
2
2
2
0
0
0
0
0
0
24 Volt Wire Sizing Chart 30 .975
R O U N D T R I P W I R E L E N G T H in F E E T
Specification Voltage is 30.00 VDC Wiring is specified for a power efficiency of 97.5% and/or correct ampacity
PV ARRAY CURRENT IN AMPERES. 6 12 15 18 21 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 25 14 13 12 12 10 8 6 6 6 6 6 6 4 4 4 2 2 2 2 0 0 0 30 14 13 12 11 10 8 6 6 6 6 6 6 4 4 4 2 2 2 2 0 0 0 35 14 12 11 10 10 8 6 6 6 6 6 5 4 4 4 2 2 2 2 0 0 0 40 14 11 10 10 9 8 6 6 6 5 5 4 4 4 3 2 2 2 2 0 0 0 45 14 11 10 9 9 8 6 6 6 5 4 4 4 3 3 2 2 2 2 0 0 0 50 13 10 10 9 8 7 6 6 5 4 4 4 3 3 2 2 2 1 1 0 0 0 60 13 10 9 8 7 7 6 5 4 4 3 3 2 2 2 1 1 1 0 0 0 0 70 12 9 8 7 7 6 5 4 4 3 3 2 2 1 1 1 0 0 0 0 1 1 80 11 8 7 7 6 5 4 4 3 2 2 1 1 1 0 0 0 1 1 1 1 1 90 11 8 7 6 6 5 4 3 3 2 1 1 1 0 0 0 1 1 1 2 2 2 100 10 7 7 6 5 4 4 3 2 1 1 1 0 0 1 1 1 1 2 2 2 2 125 10 7 6 5 4 4 3 2 1 1 0 0 1 1 2 2 2 2 3 3 3 3 150 9 6 5 4 3 3 2 1 0 0 1 1 2 2 2 3 3 3 175 8 5 4 3 3 2 1 0 0 1 1 2 2 3 3 3 200 7 4 4 3 2 1 1 0 1 1 2 2 3 3 225 7 4 3 2 2 1 0 1 1 2 3 3 3 250 7 4 3 2 1 1 0 1 2 2 3 3 Specification Voltage 30 VDC 275 6 3 2 1 1 0 1 2 2 3 3 for 24 VDC PV Applications 300 6 3 2 1 0 0 1 2 3 3 325 5 2 1 1 0 1 2 2 3 Wiring is specified for a power efficiency of 97.5% 350 5 2 1 0 0 1 2 3 3 and/or correct ampacity 375 5 Codes 2 1 0 1 1 2 3 400 4 1 1 0 1 1 2 3 The body of the table contains the Wire Gauge Number 425 4 1 0 1 1 2 3 "0" Wire is designated by 0 450 4 1 0 1 1 2 3 "00" Wire is designated by 1 475 4 1 0 1 2 2 3 "000" Wire is designated by 2 500 4 1 0 1 2 2 3 "0000" Wire is designated by 3 600 3 0 1 2 3 3 700 2 Wiring power efficiency is specified at 68°F. 1 2 3 3 800 1 1 2 3 If ambient temperature is > 90°F., use the next gauge larger wire
14
14 12 12 10
8
6
6
6
4
4
4
2
2
2
2
0
0
0
0
0
0
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