Red Wiggler
Senior Member
We are working with an indoor switchboard that is wired to receive a 3 phase 4160 volt Delta feed. There is a 4160 / ? (I am assuming 240 volt) CPT (Control Power Transformer) that is fed from a fused leg on "B" Phase. What I don't see is another phase feeding the primary of the CPT.
Is there anyway that a transformer would function with just one leg on the primary side of this CPT? The secondary looks like it has one phase and a "Neutral" going out as control power.
Any help?
Is there anyway that a transformer would function with just one leg on the primary side of this CPT? The secondary looks like it has one phase and a "Neutral" going out as control power.
Any help?