EXAMPLE
Application:
Max Amps = 11A, Length = 40ft, Voltage = 120V 1ph
Solution:
40ft is between the 25ft and 50ft columns, so the larger of the two col-
umns is chosen. Likewise, 11A is between the 10A and 12A rows, so the larger
of the two rows is chosen. 14 AWG (2.5mm
2
) is the minimum wire size for this
example.
EXTENSION CORD SIZES
Safety
13
ELECTRICAL PRACTICES (CONT’D)
Single Phase Equipment
Max
Length
120V Supply
25ft (7.5m)
50ft (15m)
75ft (25m)
100ft (30m)
150ft (45m)
200ft (60m)
230V Supply
50ft (15m)
100ft (30m)
150ft (45m)
200ft (60m)
300ft (90m)
400ft (120m)
Max Amps
Minimum Wire Size
8
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
10
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
16 AWG (1.5mm
2
)
14 AWG (2.5mm
2
)
12 AWG (4mm
2
)
12
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
14
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
12 AWG (4mm
2
)
10 AWG (6mm
2
)
16
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
12 AWG (4mm
2
)
10 AWG (6mm
2
)
18
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
14 AWG (2.5mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
10 AWG (6mm
2
)
20
12 AWG (4mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
25
12 AWG (4mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
12 AWG (4mm
2
)
10 AWG (6mm
2
)
8 AWG (10mm
2
)
30
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
8 AWG (10mm
2
)
8 AWG (10mm
2
)
Note:
The table is based on a <10% voltage loss, data from the U.S. National Electrical Code Tables 400.5(A) & 400.5(B) and typical resis-
tances for copper wire.
3 Phase Equipment
Max
Length
230V Supply
25ft (7.5m)
50ft (15m)
75ft (25m)
100ft (30m)
150ft (45m)
200ft (60m)
400V Supply
40ft (12m)
80ft (25m)
120ft (35m)
160ft (50m)
250ft (75m)
325ft (100m)
480V Supply
50ft (15m)
100ft (30m)
150ft (45m)
200ft (60m)
300ft (90m)
400ft (120m)
Max Amps
Minimum Wire Size
20
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
10 AWG (6mm
2
)
30
8 AWG (10mm
2
)
8 AWG (10mm
2
)
8 AWG (10mm
2
)
8 AWG (10mm
2
)
8 AWG (10mm
2
)
8 AWG (10mm
2
)
40
6 AWG (16mm
2
)
6 AWG (16mm
2
)
6 AWG (16mm
2
)
6 AWG (16mm
2
)
6 AWG (16mm
2
)
6 AWG (16mm
2
)
50
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
60
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
4 AWG (25mm
2
)
70*
6 AWG (16mm
2
)*
6 AWG (16mm
2
)*
6 AWG (16mm
2
)*
6 AWG (16mm
2
)*
6 AWG (16mm
2
)*
6 AWG (16mm
2
)*
80*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
90*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
100*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
4 AWG (25mm
2
)*
* 75
°
C TYPE W CORD OR EQUIVALENT
406124_RevC
Содержание DL3000P
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