Ouchi-meter
Choose the Right Energizer and Fencing. The Ouchi-meter below shows average effectiveness* of different strand weights and tape widths over various distances when paired with different energizers.
- Start by selecting your energizer.
- Look to the left to determine the length of your fence.
- Then, check the corresponding tape types to see how they perform over that distance with your chosen energizer.

Disclaimer for Voltage Decay Calculations
*Average Effective is meant as a guide and not accurate in all circumstances. The voltage decay calculations provided in these tables are based on practical estimations for a variety of electric fence energizers rated for 5, 10, 25, 50, and 100 miles of fence. These calculations assume real-world conditions and take into account factors like wire resistance, energizer joule rating, and the inherent limitations of electric fence systems when pushed beyond their advertised capacities. The results provided are approximations and should be used as general guidelines. Actual performance may vary based on specific field conditions, energizer quality, and environmental factors. Key assumptions and practical considerations were used to calculate the voltage decay over distance.
*Average Effective is meant as a guide and not accurate in all circumstances. The voltage decay calculations provided in these tables are based on practical estimations for a variety of electric fence energizers rated for 5, 10, 25, 50, and 100 miles of fence. These calculations assume real-world conditions and take into account factors like wire resistance, energizer joule rating, and the inherent limitations of electric fence systems when pushed beyond their advertised capacities. The results provided are approximations and should be used as general guidelines. Actual performance may vary based on specific field conditions, energizer quality, and environmental factors. Key assumptions and practical considerations were used to calculate the voltage decay over distance.