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What is Stray Voltage?

Stray voltage is a small electrical potential between two conductive surfaces like metal stabling, milk pipelines, water bowls and floor surfaces. It usually presents no harm and is the byproduct of the normal delivery and use of electricity. However, if the voltage level is high enough, it may affect livestock behaviour and health.

How It Works

Hydro One’s Farm Rapid Response Team works with farmers, following a step-by-step Stray Voltage Investigation to address and resolve concerns about stray voltage.

Here’s what you can expect:

  • Step 1

  • Schedule an Assessment of your Farm
  • Submit a form to begin an investigation. After we receive your completed form we will call you within five business days to arrange a site visit.

  • Step 2

  • Site Visit
  • We will meet you at your property to perform pre-test inspections, conduct a site layout, and carry out an animal contact test.

  • Step 3

  • Second Site Visit
  • Five to 10 business days after our initial assessment we will return to your property and install a farm stray voltage recording device.

  • Step 4

  • Third Site Visit
  • Two to three business days after the second site visit we will remove the recording device and analyze the data.

  • Step 5

  • Data Analysis
  • The Ontario Energy Board (OEB) has specified that voltage threshold is less than 1.0 volt. If the measured value is below this level the investigation will conclude. If analysis shows a voltage greater than 1.0 volt, we will continue our investigation.

  • Step 6

  • Further Investigation
  • If the stray voltage measures above 1.0 volt we will do further testing at your property.

  • Step 7

  • Final Site Visit
  • If corrective measures are implemented by us we will return to your property to conduct final testing.

  • Step 8

  • Completion
  • Upon investigation completion, we will send you a comprehensive report detailing our findings. The report will conclude the investigation and provide additional resources if you wish to escalate.

Hiring an Electrical Contractor

You may also hire an electrical contractor to help identify on-farm sources of stray voltage. We recommend your electrician download our Stray Voltage Test Procedure for Electrical Contractors. This will help your electrician diagnose any issues on your farm and it will also provide useful information if further investigation is required.
 

For more information

For additional information on the effects of stray voltage on livestock, refer to these additional resources: 

Hydro One is here to help. And yes, that goes for cows too.

We are accountable for all aspects of our business. That’s why our Farm Rapid Response Team is ready to help test, mitigate or allay concerns about stray voltage. Complete the form online to get started.

Contact Us 

Farm Rapid Response Team

Tel: 1-888-405-3778

Fax: 1-416-345-5957

FarmResponse@HydroOne.com



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