From 96th Street, the East Side has two
tracks and two contact rails to Mott Avenue, and from that point to
the terminal at 182d Street three tracks and three contact rails.
[Illustration: CONTACT SHOE AND FUSE]
Contact rails south of Reade Street are supplied from sub-station No.
11; from Reade Street to 19th Street they are supplied from
sub-stations Nos. 11 and 12; from 19th Street they are supplied from
sub-stations Nos. 12 and 13; from the point last named to 96th Street
they are supplied from sub-stations Nos. 13 and 14; from 96th Street
to 143d Street, on the West Side, they are supplied from sub-stations
Nos. 14 and 15; from 143d Street to Dyckman Street they are supplied
from sub-stations Nos. 15 and 17; and from that point to the terminal
they are supplied from sub-station No. 17. On the East Side branch
contact rails from 96th Street to 132d Street are supplied from
sub-stations Nos. 14 and 16; from 132d to 165th Street they are
supplied from sub-stations Nos. 16 and 18; and from 165th Street to
182d Street they are supplied from sub-station No. 18.
Each contact rail is insulated from all contact rails belonging to
adjacent tracks. This is done in order that in case of derailment or
other accident necessitating interruption of service on a given track,
trains may be operated upon the other tracks having their separate and
independent channels of electrical supply. To make this clear, we may
consider that section of the subway which lies between Reade Street
and 19th Street.
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