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ByDave Rongey © Ask the Electrician 2017 Author, Licensed Electrical Contractor
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Electric Power Supply Wiring for a Solenoid

Power Supply and Wiring for a Solenoid Valve Question: I’m running water through a Ehcotech 12 VDC 450 mA Electric Solenoid Valve. What amp 12 VDC power supply would I need to run this valve if the power supply is 35 feet away from the valve? Should I use a 450 mA, 700 mA, 2 […]

Power Supply and Wiring for a Solenoid Valve
Question: I’m running water through a Ehcotech 12 VDC 450 mA Electric Solenoid Valve. What amp 12 VDC power supply would I need to run this valve if the power supply is 35 feet away from the valve? Should I use a 450 mA, 700 mA, 2 amp or a different one entirely? I figured there’s some loss of current in the 35′, but have no idea what the formula is.
Thanks for your help.
Mike

This electrical question came from: Mike , a Homeowner from Lake Elsinore, CA
Additional Comments: Haven’t surfed it too much yet, but so far it all looks good and easy to find stuff. Thanks for having a website like this.

Dave’s Reply:
Thanks for your electrical question Mike.
Mike, there will not be much line loss at 35 feet, just make sure the wire size is not too small, basically match the wire size that is on the solenoid valve. The 450 mA power supply should work fine, however the 700mA may be better as long as the voltage is the same.

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2 Responses to “Electric Power Supply Wiring for a Solenoid”
  1. James Mallon says:

    I have a DVS power supply unit 230v-6volt DC supplying a control unit that operates ECO unit solenoids, I notice the manufacturers plate states for I.T.E use only.
    The unit is 6 volt 2.0A, will this operate the units efficiently.

    • Dave Rongey says:

      Hi James,
      You would need to identify the power requirements of the ECO Unit Solenoids, and how many solenoids will be potentially operating at the same time, and then compare that with the capacity of the 6 volt 2.0A DVS power supply to see if the power supply will work for this application.

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