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Testing an Electric Motor Circuit

Steps for Testing Electrical Power for a Pump Motor Circuit – Work you way back towards the controls and power source or electrical panel. It sounds like you lost one of the power legs of the motor circuit.


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Testing an Electrical Circuit for a Pump Motor
[ad#block]Electrical Question: There is no electrical power to a sprinkler pump.

  1. Here are the steps that I have taken:
  2. The pump partially ran for a few seconds and then stopped,  I repeated with same results.
  3. Changed starting capacitor, same results and then pump stopped working.
  4. I bypassed the timer and hooked directly to pump, pump did not work, I put in new pump and it did not work.
  5. I changed circuit breaker.
  6. Still no power to pump. Just one 220Volt on the circuit.

What else can I try?

This electrical question came from: John, a Homeowner from Indian Harbor Beach, Fl

Dave’s Reply:
Thanks for your electrical question John.

Steps for Testing Electrical Power for a Pump Motor Circuit

Testing an Electric Motor Circuit

  1. John I would recommend that you start from the pump.
  2. Test for both legs of power of the motor circuit (you mentioned that this is a 220 volt pump) .
  3. Work you way back towards the controls and power source or electrical panel.
  4. It sounds like you lost one of the power legs of the motor circuit.
  5. Also, make sure you have 220 volts at the circuit breaker at the electric panel.

The Following will assist you with your Electrical Question:

Circuit Wiring

Electrical Panel Circuit Listing

Troubleshooting Electrical Wiring

Types of Electrical Testers

Using Electrical Testers

breaker
2-pole-circuit-breaker
Electrical Wiring Protection using Circuit Breakers
A guide to home electrical circuit breakers and how they work to protect your electrical wiring. When properly installed, your home electrical wiring is protected by a circuit protection device.


The following may also be helpful for you:

Dave's Guide to Home Electrical Wiring:

» You Can Avoid Costly Mistakes! «

Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project.
  electrical wiring  

Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.


Learn more about Home Electrical Wiring
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Basic Home Electrical Wiring by Example


Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

The Quickest Way to Check for Faulty Electrical Wiring!

The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.

Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..

The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.


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