PS Magazine - APRIL 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 245
APRIL 1973
Y'crave it for prsonal safety. Y'wanT it for efficiency of equiPmEnt OPEratiON±
Y'need i² to keeP away the lightning and high voltage³
´oOr grounding can intrOducE itsElf witH hum and Other noisE intErferEncE On
coMMunications circuitsµ It can daMage equiPment and exPose PErsonneL to PossiblE
fa²Al electrical shock¶
You Get GoOd grounding by cOncentr·ting on such things
a
PErManent moisturE
lEvel, clean grounD-r¸ attachMents, wa²Er¹saºuratEd terrain when necessary, and
the right kind oF chemicAls and grounding EquiPment»
GROUNDING TECHNIQUeS
¼he tech½ical requireMents for good grounding vary f¾r DifferEnt aREas¿ but sOmE
basic factors hOld generally truEÀ
You can sharÁen uÁ your grounding by saºurating the ground¹rod AÂEa with watE±
Ãigh² ArOu½d thE roD, sliÁ a li²tlE Extra moisturE fOr a little Extra EfÄiciEncy±
If yoU're installing a coMmon ground
systeÅ for a large coMMunicatiOns comÆ
£:
Plex¿ F'riNsÇnce¿ dissolve soMe magnEÈ
,±²³=´µ¶·¸¹º»§¼½¾
siuM sUlPhate or sodiuM chloride (comÆ
mon salt) in the water you Áut in the
You can also usE coÁÁer sulÁhate¿ calcium cÉlOrideÊ Or POtassium nitrate±
Ëdding cheMicals to the water givEs yOu bettEr cOnductivity ±±. in OCÉEÂ wOrds¿
a bet²er groundµ
If you've gotÌor can getÌthE MagnEsiuM sulPHatE¿ usE itµ ¼HErE's lEss chaNcE OÄ
corrOsion, which can¿ in time¿ affEct cOnductivityµ
42
ÍOr gENEraL EÄfEÎtivEnEss and aNtiÏcOrrOsiON qÐaLitiEsÊ tHE maiN ÐsabLE cHEmicaLs
ranK as ľllows:
l.
ÑagNEsiÐm sulÁhatE (ÒPsOm saLtsÓ
±²
ÔOPPEÂ sulPhatE (bLuE vitriOLÓ
3³
ÔaLcium chlOridE
´µ
SOdium cHLOridE (cOmmON saLt)Õ
5¶
´OtassiÐm nitÂatE (saltÁEtEÂÓ
If yOÐ'Âe tacÖLiNg a grOuNdiNg iNstalLatiOn fOr aN iNdividuaL ENd itEm (a sHELtEÂÊ
fixEd×lOcatiON radio sEt¿ Etc±Ó¿ yOØ can EithEÂ dissOLvE ONE Of tÉE rEcOmmENdEd
chEmicaLs in watEr and usE tHE cOmbiNatiOn tO satuÂatE tÉE gÂOØNd aÂEa¿ OÂ givE thE
sOiL a chEMicaL trEatMEnt.
Ùig a shaLlOw circuLar trEncH abOØt
18
iNchEs arOuNd thE grOØnd ÂOd aNd LiNE ÚÉE
trEncÉ with thE cHEMical± ÛeeP tHe aÂea mOist arOund tÉE gÂOÐNd ÂOdÜ
B±sT L±AdS
StÝNdaÂd braidEd cÞPPEr gÂOÐNdiNg
stÂaPs arE tÉE bEst gÂOund LEadsß IÄ yOu
dONàÚ have 'em¿ imPrOvisE LEads ÄÂOm táE
ÉEaviEst×gaugE cOÁPEr wirE yOØ caN LatcÉ
BRAIDED
STrAP
\
OntO± ÔONsidEr ÚÉis aN ExPEdieNÚ uNÚiL
yOÐ dO ÉavE thE braidEd cOÁPEr sâÂaPs±
f
h
ÛEEP yOÐr grOundiNg LEads as sÉãrä as
±²³i
/
POssibLEåÐNdEr
6
ÄEEtÊ as a ÂØLE± SOLdEÂ
J
Or clamP cONNEcÚiOns OÄ gÂOÐNding Leads
tæ çÂOØNd ÂOds¿ EQØiPmENt ÄÂaèEsÊ OÂ
GROUND ROD
1J
1±²³
#
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