32.8.20.
Fixed lighting apparatus should be so constructed
that the lamp bulb or tube can be replaced without danger of elec-
tric shock, unless there are sufficient switches for all supply con-
ductors in the circuit to be made dead.
32.8.21. When the installation is supplied from a trolley wire
system, the lighting should be limited to the parts of the roadway
containing the trolley wire and the immediate vicinity of those
parts