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Can I wire up this Square D disconnect switch for 230v, but then make 2 115v plugs off it?
Actually, I have a 115v well pump with a built in capacitor, so no need for a control box. I'll be wiring the pressure switch into this disconnect switch.
There's also an RV parked next to the well so rather than run an extension cord, I'm wondering if I could wire up the pump, & the RV off this one disconnect switch.
I think I already know my answer though. For 115v you need one hot & one return line. I don't see any way to provide a 115v return line if the box is wired for 230v.
Can I wire up this Square D disconnect switch for 230v, then wire a 115v well pump off it?
Can I wire up this Square D disconnect switch for 230v, but then wire a 115v well pump on one leg of it, & a plug in on the other leg?
2 Answers
- dtstellwagenLv 76 years ago
You need minimum of four wires to run two separate 120v circuits, two hots, one neutral and a ground if all the conditions of NEC 210.4 are met, and the breaker is labeled 120/240 volts. (Using a two pole is the preferred method for sharing a neutral as allowed by NEC 210.4 http://freenec.com/T22.html)
As to using one leg of the starter you really need to check the directions that come that that specific model, often motor starters require all available legs to be in use to detect the correct heat during overload. Often they will safely do this by looping the load side of leg A back to the line side of leg B (Having connected line to line A, motor to load B).
Also more importantly I can't see clearly in the picture but I think this is a starter with a coil, that voltage needs to be matched, 120v will not normally pull in a 230v rated coil.
There may be other options, what size wire, what size motor.
- XTXLv 76 years ago
NO DO NOT DO THIS +++ single 20amp breakers are made for and designed to fit where you have the 230volt breaker == be safe protect your family and your home from an overload and home fire --- it is essential that you apply the correct connections in your home electric panel and not doing wiring correctly can invalidate your home insurance coverage ..... take the 230volt breaker out and with you to the HoDepot or Lowe's so you get the size correct either regular or thin breakers ...... do not ''jack around'' with the home panel as that is not SAFE..................