Test

Test (E)

Test (F)

Test (G)

Size of the main cable

37/0.092 in.

37/0.092 in.

19/0.072 in.

IEE rating (amperes)

214

214

97

Type of the sheath

Armour

Armour

Armour

Description of the sheath

Single

Double

Single

External diameter of the sheath

1.55 in.

1.77 in.

1.16 in.

Resistance of sheath per 100 yards of circuit, ohms

0.122

0.056

0.124

Permeability of sheath section

6

17

11

Sheath current for IEEE rating (main current), amps

0.5

0.46

0.33

Ratio: Sheath current/main current

0.0023

0.0021

0.0034

Percentage increase in sheath current for d = 12 in over that for d = 0

21.4

10.5

28.8

Percentage increase in sheath current for d = 48 in over that for d = 0

40

11.1

52

Impedance per 100 yards of circuit, ohms

0.125

0.157

0.177

Dead resistance per 100 yards of circuit, ohms

0.029

0.035

0.065

Effective resistance per 100 yards of circuit, ohms

0.0505

0.093

0.109

Ration: Impedance/Dead resistance

4.3

4.5

2.73

Ration: Effective resistance/Dead resistance

1.74

2.68

1.68

Watts loss per ampere of the main current per 100 yards of circuit

10.8

21.3

10.9

Voltage drop per 100 yards of circuit, volts

26.6

42.3

17.7