Conductor Color Codes
•Technical Data
  Full Load Current Values
Current Carrying Capacity of Flexible Cords
Amperage Rating for Metric Copper
  Glossary of Terms


 
Full Load Current Values
Current Values Based on Usual Speed and Normal Torque

Motor

Horse

Power
Rated Motor Voltage - 110V to 120V

Direct

Single-

Three-Phase

Current

Phase AC

(Induction) AC
Rated Motor Voltage - 220V to 240V

Direct

Single-

Three-Phase

Current

Phase AC

(Induction) AC

.25

2.9 Amps 

5.8 Amps

-

1.5 Amps 

2.9 Amps 

-

.33

3.6

7.2

-

1.8

3.5

-

.25

5.2

9.8

4.0 Amps

2.6

4.9

2.9 Amps 

3.4

7.4

13.8

5.6

3.7

6.9

2.8

1

9.4

16.0

7.2

4.7

8.0

3.6

1.5

13.2

20.0

10.4

6.6

10.0

5.2

2

17.0

24.0

13.6

8.5

12.0

6.8

3

25.0

34.0

-

12.2

17.0

9.6

5

40.0

56.0

-

20.0

28.0

15.2

7.5

58.0

80.0

-

29.0

40.0

22.0

10

78.0

100.0

-

38.0

50.0

28.0
For full load currents of 206V and 200V motors, increase corresponding 220V value above by 6% and 10% respectively.

 
Current Carrying Capacity of Flexible Cords
Based on Ambient Temperature of 30°C (86°F)
AWG
Wire
Size
Thermoplastic Types
ST, STO, SJT, SJTO
SVT, SVTO, SPT
Types
HPD, HPN, HSJ
HSO
A*
B*
18
7 Amps
10 Amps
10
17
-
-
12
16
10
13
15
14
15
18
20
12
20
25
30
10
25
30
35
8
35
40
-
6
45
55
-

Amperage shown is for not more than three conductors in a cord. If cord has from four to six conductors, decrease the values shown.

*Yacute;The ampacities under subheading A are applicable to three-conductor cords and four-conductor cords with three conductors carrying current. The ampacities under subheading B are applicable to two-conductor cords and three-conductor cords with two conductors carrying current.

NOTE: On extension cords over 50 feet, derate by two wire sizes.

 

 
Amperage Ratings for Metric Copper
Copper Size mm3

ETSA

Western European*
0.50

3.0 Amps

6.0 Amps
0.75

7.5

10.0
1.00

10.0

12.0
1.50

15.0

16.0
2.50

20.0

20.0
*General use ratings only. Check with appropriate approval agency for specific applications, as ratings vary from country to country.

 

 


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