Richardson's handbook of projection (1927)

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MANAGERS AND PROJECTIONISTS 959 CAUTION.— Switch should always be kept lubricated to prevent possibility of sticking. The douser circuit must be fused, and the fuses must not exceed ten (10) amperes capacity. Wires attached to douser are colored. Yellow wire connects douser to line, through a S. P. S. T. knife switch. Light brown wire closes douser. It is attached to white wire of other douser, and through it to one terminal of each switch as shown. ' White wire connects to brown wire of other dousers and through it to one pole of each switch. The third pole of the ^^rrSo. to the ,ineJt k a" made v^ p*» «» WIRING PLAN -TWO P0W5ER5 -TWO SWITCHES Figure 379 CAUTION.— Before connecting white and light brown wires to switches, test the circuits and see that they are open except when switches are operated. All momentary contact switches have two "hot" legs. They are sometime^ bridged t.1? \ 0n? fnd .and s°metimes from corner to corner. Always test to determine which, as it will make a difference in