Power surge.
so I'm no electrician, I do however understand a little about how power works. So today on the farm, apart from the usual chores I was set the task of finding shorts in particular electric fences in some areas of the farm. I've finally worked out with a little help from Pa what all the different numbers on the fence tester mean. Believe me its very helpful to have this information! I travel rather long distances, some parts by motorbike others by foot and to my dismay it took a good couple of hours to find the main problem. The sad thing about this tale is.... whilst I was spraying ragwart earlier today I'd walked right passed the problem without even noticing!!!! Even tested the fence not far away!!!!!
Anyway all fixed now ready for all the cattle to workout how they can be smart and a little nimble and get out through all these electrics...however I am still trying to work one thing out. How does a single wire running around the outside of a farm go from 4 amp to 2amp without a single short to be found?????
Happy Dayz My Readers.x
Comments (25)
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then again i may be competely wrong regards to your site,
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Please always follow, safety proccedure.
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i hope tis will help.
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there is 2 reason for that.
1- a leakage.
2- someone is using your electricity
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a dry joint and the resistance of the wire will not cause loss of charge (i.e. current in will still equal current out) ... it definately ain't the issue.
are we forgeting OHM's LAW.
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Please think, you may have probebly have same voltage at other end [ OFF=LOAD ] but you may not get current.
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then again my experties are not in agriculture field anyway, so i may be wrong completely as i said early.
by the principle of conservation of charge (aka Kirchove's current laws), current into a node (in this case, the wire) is equal to the current out of the node (i.e. the wire) ... that is irrelevant if the impedance of the node ....
the chic is right in saying that 4 amperes in, 4 amperes out is what we should get! .. assuming no loads (or rather, no intentional loads) are connected on the wire)
I did - once - god almighty, I came close at becoming a eunuch !
I'll defer to the resident engineer (10k) but will pose this question... Over a long enough run (lots of fence posts) wouldn't some current find it's way to ground (literally)?
It would seem that some current get's out of the wire into each fence post (and into the ground)... a very small amount... but perhaps this adds up to an expected 'normal loss per 100 posts' (or something like this).