July 24, 2018
AC/Mains Powered Fence Chargers | Gallagher Fence
Selecting an Energizer
The energizer is the heart of any electric-fence system, so select it carefully. A good unit will provide years of service if it is properly installed and maintained. Price should not be the determining factor. Many operators have started with farmstore specials that ended up crashing. The cost to purchase two or three cheap models is as much or more than the cost of purchasing a good one initially.
Purchase a low impedance Energizer with a minimum 5,000-volt output. It should produce 35-65 pulses per minute with each pulse lasting not more than 0.0003 seconds. Each pulse also should have an intensity of less than 300 m Amps.
Seek advice about energizers from experienced graziers, from sales people and from NRCS personnel. NRCS employees cannot recommend specific brands, but they can offer general advice. One of the best methods is to look at several operations similar to yours, and find out what those grazers are using and if they are happy with their units.
Consider the type of livestock to be controlled. For example, containing sheep, goats or horses may require special considerations for charger size and fence construction to ensure that the animals receive adequate shocks when they contact electric fences.
Purchase a larger unit (energizer) than you think you need because graziers usually expand their systems as they realize the benefits of modern electric fencing. Also increase the size of the energizer if you anticipate a high weed load near the fence. All energizers should come with manuals that explain installation and operation. Study the manual carefully.
July 10, 2018
How does an Electric Fence work?
Electric current (AMPS) only flows when a circuit is completed between a positive and negative terminal.
In this diagram the current cannot flow from the positive terminal to the negative terminal because the switch is open.
In this second diagram, the switch is now closed, allowing the current to flow from the positive terminal through the light bulb (lighting the bulb) to the negative terminal.
An electric fence circuit is made on a larger scale. The energizer fence terminal (positive) is connected to the insulated fence wires, and the energizer earth terminal (negative) is connected to galvanized metal stakes driven into the ground.
The same 'circuit completion' (second diagram above) is necessary before the animal gets a shock. An animal standing on the ground and touching the electrified wires (shown right) will complete the circuit like the closed switch in the second diagram above.
For example, a bird sitting on the wire will not receive a shock (shown left). It is not touching the ground so the circuit is not completed. A person wearing insulated footwear will only receive a small shock because all the current cannot pass through the insulated soles.
Dry, sandy or pumice soil is a poor conductor of electric current, so it is a good idea to add an ground (negative) wire into the fence. The animal must touch both a hot wire and ground wire to feel an effective shock.
BUY HERE! 656' WHITE GALLAGHER TURBO WIRE
3/32" Turbo Wire
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Features
- Best suited to distances more than 1/8 mi. where extreme power is required.
- Turbo Wire resistance is 209 Ohms/mi.
- 40 times more conductive than standard Polywire.
- Nine mixed-metal strands.
- UV-stabilized and strong for longer life.
- Ultra white, clearly visible to animals.
- Better than standard poliwire or poli wire
Suitable for: Sheep, Pig, Horse, Cow, Bull, Wildlife
| Warranty: | 1 year |
| Product Code: | G620544 |
Wires, tapes and braids
There are 12 different types of tape, wire, braid and rope in the Gallagher range. Tape is generally used where visibility is important, wire is preferable where wind or adverse weather conditions exsist and braid is a woven product designed not to "tangle" or overstretch.
June 28, 2018
Choosing the Right Energizer (Electric Fence Charger)
Choosing the Right Energizer (Fence Charger)
Once you have decided what type of electric fence you want for your property, you will need an energizer also known as a fence charger to power it. The correct energizer size for your property is determined by the type of animal to be fenced, distance of fence to be powered and the number of wires in the fence.
There are two types of energizers:
- Mains powered - these are energizer units which are plugged into a mains power supply.
- Battery/Solar powered - these are energizer units which can be left out in your paddock and require a battery to run them. Two batteries can be rotated on a regular basis or a solar panel can be an effective means of continuously charging your battery.
The continuous need for improvement in management and production practices is contributing to the increasingly popular use of electronic ID/RFID cattle tags in the cattle industry. EID tags are small “button-like” tags that are placed in the ear. Each EID tag has a unique 15-digit number printed on it, and the number can also be read by scanning the tag with an EID reader. These tags are designed to last for the life of the animal.
An EID Reader can be connected to a any Gallagher or Tru-test EID-compatible scale indicator for scanning electronic ID tags and associating the EID with the animal currently on the scale. Many cow-calf producers appreciate the Bluetooth (wireless) connection with the scale indicator as there are no cables between the reader and scale indicator to get in the way.
Multispecies Grazing: Management Techniques & Animal Care [CRAFT]
June 21, 2018
Grounding an electric fence
Steps to Good Electric Fence Grounding Systems
Grounding is perhaps the most neglected component of many fence systems. We recommend three ground rods, 6’ deep and spaced 10’ apart are the minimum recommendation. Never attach copper to steel. Electrolysis can occur and result in corrosion which weakens shocking power. Use galvanized ground wire and grounding rods to avoid this problem.
Consider that most energizers use galvanized or stainless steel terminals – not copper. Think of your ground system as an antenna that gathers electricity in order to deliver the shock to the animal. Modern satellite receivers can tune in to more television channels than the “rabbit ear” antennas of the past. A hose clamp holding a piece of copper wire to a rusty t-post has been the weakest link of many electric fence systems.
June 19, 2018
Shade Haven Portable Livestock Shade Canopy at Field Day
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