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What are the umarked middle secondary terminal screw(s) for on a 9070 Type T or TF control transformer?

The terminals are a standard 4 or 6 place board. If the wiring connection, with or without fusing, requires fewer landings, then the remaining unused, unmarked terminal screws are not connected to anything. The customer may utilize those landings, if they need to, as they wish with the addition of a jumper of their own manufacture.


CTA-ID : 1142
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