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 |