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clear glass ] ra- Globea
wire-gauze spark arresters, and 73re8?erTa^r"
wire globe nets.
sets of carbons, a set consisting 74- Carb0ns.
of one upper and one lower carbon. (Seep. 51, sec. 25.)
(See p. 51, sec. 26.) 76- P^£fwaI
(See Note: p. 52, sec. 27.) 77. summary.
Each bidder shall fill out completely the following summary:
Number of dynamos ....
Trade number or designation . .
Rating in volts —
Rating in amperes ..... ———
Capacity in c. p. lamps . . —
Series or shunt wound . , . . —
H. P. required to be delivered at
pulley at full load . . .
SWITCHBOARD APPARATUS AND CONNECTIONS.
This contractor shall furnish and erect the following apparatus and material:
One combination (material) switchboard with a capacity for circuits, and provided with the necessary sockets, plugs, main and transfer cables, testing connections, and a suitable and convenient device for holding cables not in use. It shall be so arranged and marked that any circuit or series of circuits may be quickly connected with or disconnected from any dynamo with the least possible danger of short-circuits or error. Sockets shall be so designed that it is practically impossible to short-circuit, ground or receive a shock from them. All connections with the dynamo leads shall be easily accessible. All wires used in making connections shall have insulation. All plugs shall have well insulated wooden handles and the cables shall be covered with soft-rubber tubing or equivalent as an extra precaution. All cables shall be of stranded wire.
All joints shall be soldered. All connections to switches, cut-outs, etc., shall be soldered or made with an approved form of lug or set-screw, in all cases care being taken to secure good and sufficient contact to prevent heating and insure permanency; when made with lugs or setscrews they shall be in plain sight and easily accessible for tightening. Connecting wires shall be so run and secured that crosses or grounds are impossible in the normal operation of the plant.
(Note.—No set specification can be made TM-d for fixtures and shades; their character must be determined wholly from individual requirements. See schedule, p. 136).
This contractor shall furnish and de- so. Lamps.
liver at the following number, sizes,
and kinds of incandescent lamps:
f Voltage. f Plain.
stating, also, their make and the make of the socket for which they are adapted. Lamps shall be guaranteed to have an
average life of not less than hours if
burned at their normal voltage. They shall burn with a white light and shall not blacken under proper use. All lamps giving out or proving defective during the trial period of days under normal and proper use shall be replaced without charge.
si. sockets This contractor shall furnish and de
kinds of sockets and receptacles:
etc. etc. etc.
82. Meters. This contractor shall furnish and
j deliver at I
J place in position j
bers and sizes of the
\ dfliveF at —T7 I the following numJ place in position (