*All* livestock chargers pulse, not just low impedence. Sheep may require a stronger shock than horses because they are woolly, but in any case you want a stronger shock to keep PREDATORS out as well... the usual recommendation is 4-5,000 V (2500-3000 is more usual for horses).
Rather than getting a bigger charger, it may be more useful to just temporarily disconnect some of the existing fence (less load on charger = larger shock) or if that's not possible then to buy a SECOND midsize charger.
Also if you are going to have livestock you really ought to get a good DIGITAL fence tester (not one of the five-neon-light thingies which are notoriously unreliable). If your fence is truly only at 2500-3000 volts *now*, in a wet autumn, you may have trouble keeping the horses in come wintertime when the charge on the fence will drop significantly (snow, and frozen ground) and the horses will be hairier and perhaps blanketed). So you may need a stronger charge on the HORSE fence too. OTOH maybe the sheep just didn't see or understand the electric fence and the charge is sufficient. Only a tester will tell you.
Usually when introducing new animals to an electric-fenced field it is a good idea to TRAIN them to the fence (bait it or entice them over, til they get zapped on the nosie) and also to make it EXTRA VISIBLE, using extra posts, wider tape or whatever, and/or flags. If it's a big field, confine them to just one portion of it while they're new. THis is especially true if the animals were not kept in electric before, but even if they were, they may not realize that yours *is* until it's too late and they've gone thru it already.
Good luck,
Pat
Rather than getting a bigger charger, it may be more useful to just temporarily disconnect some of the existing fence (less load on charger = larger shock) or if that's not possible then to buy a SECOND midsize charger.
Also if you are going to have livestock you really ought to get a good DIGITAL fence tester (not one of the five-neon-light thingies which are notoriously unreliable). If your fence is truly only at 2500-3000 volts *now*, in a wet autumn, you may have trouble keeping the horses in come wintertime when the charge on the fence will drop significantly (snow, and frozen ground) and the horses will be hairier and perhaps blanketed). So you may need a stronger charge on the HORSE fence too. OTOH maybe the sheep just didn't see or understand the electric fence and the charge is sufficient. Only a tester will tell you.
Usually when introducing new animals to an electric-fenced field it is a good idea to TRAIN them to the fence (bait it or entice them over, til they get zapped on the nosie) and also to make it EXTRA VISIBLE, using extra posts, wider tape or whatever, and/or flags. If it's a big field, confine them to just one portion of it while they're new. THis is especially true if the animals were not kept in electric before, but even if they were, they may not realize that yours *is* until it's too late and they've gone thru it already.
Good luck,
Pat
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