Category Archives: Animals

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Skunks

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Raccoons

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Stray Voltage: Sources and Solutions

Michigan State University

 

Stray Voltage: Sources and Solutions

Truman C. Surbrook – Norman D. Reese – Angela M. Kehrle

 

Abstract.  Stray voltage is caused by voltage drop and ground faults and may have its origin on the primary electrical distribution system or on the customer’s secondary electrical system. The rms value of the neutral-to-earth voltage along a primary distribution line may be at a value of zero some distance from the substation depending on the condition of the conductor resistances, grounding resistances, and the amount of load. Neutral-to-earth resistance is not the cause of stray voltage; however, the value of this resistance to earth at a particular location will affect the level of stray voltage. A four-wire single-phase feeder system supplying farm buildings from a single metering point is effective in preventing on-farm secondary neutral voltage drop, provided the four-wire system is extended to all farm loads, and provided no high-magnitude ground faults are present. Isolation of the primary and secondary neutral systems at the distribution transformer is effective in preventing off-farm sources from entering the customer’s system. This separation may be accomplished using a number of commercially available devices.

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Dogs and Agriculture

Dogs have been bred for a variety of purposes throughout history, including as working animals to support agriculture. Dogs have been bred for specific traits that make them well-suited to work on farms, such as intelligence, obedience, strength, and endurance*.

University of Oxford Estates Services

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Here are a few examples of how dogs were bred to support agriculture:

Herding dogs: Dogs such as the Border Collie, Australian Cattle Dog, and German Shepherd were bred to help farmers manage livestock by herding them from one place to another. These dogs have a natural instinct to gather and control herds of animals, and they can be trained to respond to a farmer’s commands.

Hunting dogs: Many breeds of dogs, such as the Labrador Retriever, were originally bred as hunting dogs to assist farmers with hunting game for food. These dogs have a keen sense of smell and are skilled at tracking and retrieving prey.

Guard dogs: Certain breeds of dogs, such as the Great Pyrenees, were bred to protect livestock from predators such as wolves and bears. These dogs are fiercely protective of their flock and will guard them from any perceived threat.

Draft dogs: Some large breeds of dogs, such as the Bernese Mountain Dog and the Saint Bernard, were bred to pull carts and wagons on farms. These dogs are strong and muscular and can move heavy loads across long distances.

Overall, dogs have been bred for centuries to support agriculture in a variety of ways. Their intelligence, loyalty, and hardworking nature have made them invaluable assets to farmers and have helped to shape the course of human history.

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