Electrical Wiring Question: Transformer Connections
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OK, I attached a diagram of the situation for review. The simple question is, "Can I use a common wire on the low voltage secondary side of the transformers as is shown in the drawing?" The transformers are 100 watts each and are all fed from the same 120V breaker; however, they are switched on and off separately. I know the neutrals can be common on the primary side but am a bit clueless as to what happens on the secondary side. In order to save wire and conduit sizing, I am wondering if I can run one side of my light cords directly to one side of the transformer secondary but connect the other side of my light to a common wire that is jumpered across all four secondaries. All the transformers are basically identical in ratings . I'm just not real sure about actual current flow in these secondaries in situations where all the lights aren't switched on at the same time and things like that.
Comments
I know I am excessively and probably stupidly making too much about this but I have basically got a miniature waterpark with over 75 pool, spa, waterfall, and landscape lights that I am connecting over a large physical area through many satellite j-boxes and transformer banks and I can ill afford to fry the components. For me it would greatly reduce the number of wires daisy chaining through some of these transformer banks of 4 to 8 transformers if I could do it with a single neutral.
Establishing the polarity of the transformers is a standard test and can be quickly done if the transformers aren't already marked. Just Google transformer polarity.
Probably worthwhile grounding that neutral point in case one transformer fails winding to winding.
Cheers,