PS Magazine - NOVEMBER 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 252
NOVEMBER 1973
c
Got a 3-prOnged plu± ON The
cord of
yOUR elecTRic TOOL? And yOu'Re st²g a³
aN OutLet made fO´ a 2µPrONge¶·
Be sU¸e tO hitch The grOuNd wre O¹ ºe
adapter tO thE screW iN the eLec»Ical Ou³¼
½Et cOveR.
¾hat iS, yO¿ hitch ÀeM Áp
i
The ScreW IS
metal and
I
iTÀS a gOOd grOuNd BeSt Way
to See
i
itÃS a gOOd gROund iS tO haVe yO¿R
uNit ´epaiRmaN teSt it wTh a mUltimeterÂ
A grOÁND WÄÅÆ rÇÈÉiNg From the ÊÁTLet'sË
LeadµiN cabLÆ TO the ÌaÍL Êf the oÎtLet ÏOx
yOÁr engine haS a "ÐegaTive ÑrOund ÒÓlyÔ
WaÕing platÖ, dONÀt geT OvercHaRged× ¾hat
regulatOr may Ïe
OK
fOr yOuR pOsitIVEØ
gROÁNÙed
DC
chargiNg SySTemÂ
ÚefOrÛ mOuNtiNgÜ check ÝiNS "AÞ
and
"B'' Of the regulatOrÀS maLe ßeceptacle FàR
cOntinUityá âSe an OhmmeteRã
äf åheyÀre inteRcONNecæeÙ, iTÀS
±k
fàr
yOur pÊSitiveµgrOund SyStem×
äf theyÀre NOt, have YoÁr
DS
ÁNit Opeç
The regÁLaTOr aNd cÊNNecT piNS "Aè and
"Bé WIth aN adapter made Of ÐOã 12µA
WG
Ìire× ¾hen iTêLL Ïe
²K
fOr use Oë a ìOSiåíVî¼
Or NegatíveïgrOðnded chaRging SySTeM×
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