A 10
[Subsidiary]
L.N. 76/82. L.N. 298/82.
L.N. 76/82. L.N. 298/82.
factor of safety of line conductors:
minimum height of conductors:
L.N. 76/82.
L.N. 298/82.
CAP. 103]
Electricity Supply Regulations
[1984 Ed.
(ii) a suitable metal framework to support the insulators carrying the line conductors, the framework being insulated from the pole but connected to the neutral conductor; or
(iii) other means approved by the Director of Electrical and Mechanical Services;
(b) in cases where wooden poles are used, of—
(i) a bonding wire connected to the supporting metal work of all insulators, the bonding wire terminating at the lowest part of the supporting metal work; or
(ii) other means approved by the Director of Electrical and Mechanical Services.
All stay wires other than those which are connected with earth by means of a continuous earth wire shall be insulated to prevent danger from leakage. For this purpose an insulator shall be placed in each stay wire at a height of not less than 10 feet from the ground.
B—For voltages exceeding 650 volts direct current and 325 volts alternating current
(15) The factor of safety of line conductors shall be 2. The factor of safety shall be based on the breaking load and shall be calculated on the assumption that the line conductors are at a temperature of 70°F and that they are subjected to a wind pressure of 40 lb. per square foot.
(16) The height from the ground of any line conductor at any point on the span at a temperature of 160°F shall not, except with the consent of the Director of Electrical and Mechanical Services, be less than the height hereunder stated—
Voltages not exceeding 66,000 volts
20 feet
Voltages exceeding 66,000 volts and not exceeding
110,000 volts ....
21 feet
Voltages exceeding 110,000 volts and not exceeding
165,000 volts
22 feet
Voltages exceeding 165,000 volts
23 feet
provision to prevent danger;
The height from the ground of an earth wire or auxiliary conductor shall not be less than the minimum heights prescribed in paragraph (13) above.
(17) Adequate means shall be provided to render any line conductor dead or harmless to human beings or animals in the event of it falling, due to breakage or otherwise.
All metal work other than conductors shall be permanently and efficiently connected with earth. For this purpose a continuous earth wire shall be provided and connected with earth at 4 points in every mile, the spacing between the points being as nearly equidis-
Page 10
Page 11
A 10
[Subsidiary]
L.N. 76/82. L.N. 298/82.
L.N. 76/82. L.N. 298/82.
factor of safety of line conductors:
minimum height of conductors:
L.N. 76/82.
L.N. 298/82.
CAP. 103]
Electricity Supply Regulations
[1984 Ed.
(ii) a suitable metal framework to support the insula- tors carrying the line conductors, the framework being insulated from the pole but connected to the neutral conductor; or
(iii) other means approved by the Director of Electrical and Mechanical Services;
(b) in cases where wooden poles are used, of—
(i) a bonding wire connected to the supporting metal work of all insulators, the bonding wire terminating at the lowest part of the supporting metal work; or
(ii) other means approved by the Director of Electrical and Mechanical Services.
All stay wires other than those which are connected with earth by means of a continuous earth wire shall be insulated to prevent danger from leakage. For this purpose an insulator shall be placed in each stay wire at a height of not less than 10 feet from the ground.
B-For voltages exceeding 650 volts direct current and 325 volts alternating current
(15) The factor of safety of line conductors shall be 2. The factor of safety shall be based on the breaking load and shall be calculated on the assumption that the line conductors are at a temperature of 70°F. and that they are subjected to a wind pressure of 40 lb. per square foot.
(16) The height from the ground of any line conductor at any point on the span at a temperature of 160 ̊F. shall not, except with the consent of the Director of Electrical and Mechanical Services, be less than the height hereunder stated-
Voltages not exceeding 66,000 volts
20 feet
Voltages exceeding 66,000 volts and not exceeding
110,000 volts ....
21 feet
Voltages exceeding 110,000 volts and not exceeding
165,000 volts
22 feet
Voltages exceeding 165,000 volts
23 feet
provision to prevent danger;
The height from the ground of an earth wire or auxiliary conductor shall not be less than the minimum heights prescribed in paragraph (13) above.
(17) Adequate means shall be provided to render any line conductor dead or harmless to human beings or animals in the event of it falling, due to breakage or otherwise.
All metal work other than conductors shall be permanently and efficiently connected with earth. For this purpose a continuous earth wire shall be provided and connected with earth at 4 points in every mile, the spacing between the points being as nearly equidis-
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