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IOWASTRAYVOLTAGEGUIDE91.WhenafarmercallsaboutstrayvoltagewhathappensTheutilitywilllistentowhattypeoconcernsyouhavewhatyouwanttohappenanddeterminewhattheutilitycandooryou.Iyouareinterestedtheutilitywillmakeanappointmentorthebeginningoanactualstrayvoltageinvestigation.2.WhatdoesaninitialstrayvoltageinvestigationincludeSpotvoltagechecksaredoneatarepresentativenumberoanimalcontactlocationstoidentiywhereanimalsmaybeexposedtovoltage.Spotchecksalsoidentiytheareaswithhighervoltagereadingsandwhereextendedtimeanimalcontactvoltagerecordingshouldbedone.Voltagemeasurementsaremonitoredwitharecordingvoltagemeteroraminimumoatleasttwomilkingsorapproximately24hours.Anominal500-Ohmresistorisusedorextendedanimalcontactmonitoringinordertoaccuratelymeasurethevoltagelivestockmayeel.Therecorderisalsomonitoringvoltagelevelsontheutilityelectricalsystematthetransormerandthearmelectricalsystematalivestockbuildingonthearm.Detailedreportsdataandexplanations.ProvidingacopyotheProperFarmWiringSummary.Seepage83.HowlongdoestheutilitytestduringaninvestigationTherecordingvoltagemeterisinstalledortwomilkingsorapproximately24hours.Monitoringusuallycontinuesuntilitisdeterminedthattheentireelectricalsystemhasbeenevaluatedandtheconcernsothearmerareaddressed.4.DoesthetestingincludetheutilitysystemorjustthefarmwiringTheutilitywillevaluateboththeon-armandof-armelectricalsystems.Theutilitycanshowthemeasurementsrombothsystemstoyou.FREQUENTLYASKEDQUESTIONS5.DoesthefarmergetacopyofthetestingresultsYesyouwillreceiveasummarylettercopiesotherecordeddataasgraphsandanexplanationoallthedatacollected.6.IsthereacosttothefarmerforaninvestigationTheinitialstrayvoltageinvestigationisusuallyprovidedbytheelectricutilitytolivestockarmersatnocharge.Checkwithyourelectricutilityoritsspecicpracticeorpolicy.7.CantheutilityinstallaneutralisolatoronmyfarmYestheutilitycaninstallanisolator.Isolationatthetransormercanonlybecompletedbytheutility.Aneutralisolatorisasaetyreconnectdevice.Itisinstalledbetweentheutilitysprimaryneutralandthesecondaryneutralorthearmanddisconnectsthebondbetweentheutilityandarmneutralwiresisolation.Undernormaloperationthisreducesstrayvoltageonthearm.Howeverunderabnormalconditionse.g.shortcircuitsorlightningstrikestheisolatorautomaticallyreconnectstheprimaryneutralandthesecondaryneutralorsaety.Atertheeventhaspassedtheisolatorreturnstotheoriginalstateoisolation.Contactyourutilityrepresentativetoobtainanyapplicableormsandobtaininormationabouttheprocessandcostsorinstallinganisolatingdevice.Ianisolationdeviceisinstalledyouwillneedtodiscussmaintenanceandinspectionobligationswithyourelectricutility.