104
HONG KONG REGIS) 103 NG. 1917.
BP 1CIFICATION OF A SURMARIES CABLY TO BE LAID
FROM HUNGNOM TO MURTH POINT, HONG KONO,
astor.
ulation
pacity.
|bvering.
touring.
The Cable to be 2000 yards long, in one piece,
Approximate diameter over all, two inches.
The Conductors of Ho. 20 8.1.0. (20 lbs. per mile)
high conductivity copper wire, maximum conductivity resistance 44 ohms at 60o »., and twisted in pairs.
ach conductor to be insulated with a layer of impregnated paper to give a D.ñ, of at least 200 megs, par mile; and the 10 pairs served together and endlosed
within a lead tube ‚1 ingh in thickness.
The mean specific capasity between any one wire,
shall and all the other wires and the sheath to earth,
not exseed .125 to „15 microfarads per mile at a
temperatura of 60o 3.
The land sheath to be tinned outside and taped with a layer of osokerite prepared tape, a layer of Muntz metal tape 4 mils, this and another layer of
ozokerite tape.
All armour wires to be galvanised mild steel of the quality specified by the ngineering Standar de Committee, taped with azokerite prepared tape, the inner and outer armour to be reverse laid,
The