Motion picture projection; an elementary text-book (1921)

Record Details:

Title:
Motion picture projection; an elementary text-book
Date:
1921
Publisher:
New York, Theatre Supply Co.
Volume:
Motion picture projection; an elementary text-book
Leaf #:
00085
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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84 MOTION PICTURE PROJECTION Link fuses have no protective covering, so should always be installed in a metal cabinet. Cartridge Fuse. Made by connecting two metal cap terminals with a short paper tubing. The two metal caps are connected by a thin wire which runs through the paper tubing, the tubing is filled with some non-conducting powder. Plug Fuses. Plug fuses are used for protecting the house wiring and circuits carrying small amperage. In fusing upon any circuit you must take into consideration the size of the wire used and the amount of amperage to be drawn. The fuse should be rated under the carrying capacity of the wire with a sufficient margin to allow the required number of amperes to pass over without overheating. The rating of all fuses is marked on them. Never use a fuse not marked. Edison Fuse-Plug