Wiring a 2 Speed swimming pool pump

[mas985]

Blue is identified as part of 3-phase but it is also optionally allowed for a third color in split phase wiring. Where I live, blue seems pretty common in household wiring. In fact, when we had our kitchen redone, that is all they used because I think that they wanted to be able to tell the difference between new and old wiring since the old wiring was both red and black (70s house). I asked the electrician about it and he said that the code now allows them to use blue for household wiring.

For a 230v 2 speed motor, there are three hot wires to contend with so to tell them apart, you really need three colors. My pump motor is also wired with three colors; red, black and blue.

[PoolDoc]

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