Question about Diehl TA-4150 24 Hour Electromechanical Timer Module
Here are two possible solutions, since timers are made different ways:
1) Diehl timer has 5 terminals
Drawing below shows wiring for Diehl SPST:
2) Your timer might also be wired as follows:
Two screws marked 'timer' are for 120Volt Hot and Neutral that power the clock motor (in drawing above, these are terminals 1 and 2).
Another Hot wire connects to COM. (in drawing above this hot wire shown connecting to terminal 3)
Load wire connects to terminal NO (in drawing above this wire shown connecting to terminal 4)
3) NO is Normally-Open turns ON when tier turns ON
NC is Normally-closed is ON all the time, EXCEPT when timer turns ON. So NC terminal turns OFF when timer turns ON.
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