Specifications

WS PRO LT weather station 17
Tominimizeresistance,thecopperwiremustbepre‐weldedtothegrounding
rods/plates,orweldedtotherods/platesusinganexothermicweldingprocessatthe
site.
Makesureallweldsaresecurebeforeburyingthegroundingrods.Rodsandplateswith
weldedjointsdonotneedperiodicvisualinspectionandcanbefullyburied(novalve
boxrequired).Measurethegroundresistancearoundthegroundingsystemafter
installation,andonceeveryyearafterthat.
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Note:Thegroundwirefromtheequipmenttothegroundingsystemshould
beasshortaspossibleandhavenobends,kinks,orcoilsinthewire.
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Inspectthegroundingsystem’sclampedconnectionstotheequipment(notthewelded
groundingsystemconnections)onceayeartomakesuretheyaresecureandcorrosion‐
free. 
FIGUREA.1‐1Groundingsystemscandevelopresistanceatmanypoints\
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A.1.3 GroundRodStacking
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Threadedcouplers(showninFigureA.1‐2)aregroundrodsplices.Ifasinglegrounding
rodfailstoproduce10‐ohmgroundresistance(maximum),threadedcouplerscanbe
usedto“stack”groundingrods.
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Note:Usethreadedcouplersmadeofthesamematerialasyourgroundingrods.
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Stackinggroundrodsincreasesthetotaleffectiverodlength,decreasingground
resistance.Joiningtherodstogetherwiththreadedcouplersformsasecureconnection
sothegroundingrodscanbeassembledquicklyandeasily.