However, when the current is low, these fences are not strong enough to turn animals, and they require frequent inspection and maintenance. These chargers can energize several miles of fence. It is extremely important that the chargers and fence be properly grounded to achieve optimum performance. This may require that several ground rods be placed in a series. The problem of shorting out because of grass and weed contact with energized wires has been reduced but not eliminated by modern fence chargers.
Rotational grazing requires that large pastures be subdivided into several small pastures.
This can create a large number of cross-fences. Cross-fences may consist of one, two, or three strands if electric fencing is used. Careful attention to fence charger selection, good grounding, and keeping fence strands weed-free can ensure good animal control. If pastures are to be used for occasional hay harvest, removable cross-fences may be desirable. Temporary fences Temporary fences can subdivide pastures during periods of rapid growth or fields that may later be used for cropping.