>From wikipedia entry on NEC: As of 1962 the NEC required that new 120-volt household receptacle outlets, for general purpose use, be both grounded and polarized. NEMA has implemented this in its U.S. standard socket ... Note: Local jurisdictions may have been slow to update... > I believe mine was built in 1966-68. It has independent ground only in > kitchen and bath..anywhere where contact to the grounded plumbing may be > a possibility > Tom > > Robert Stodieck wrote: >> Ours was built 1961-ish and had two. >> >> >>> From: James Long <n6yb@INTERNET. arrl.net> >>> Reply-To: James Long <n6yb@INTERNET. arrl.net> >>> Date: Fri, 14 Dec 2007 19:51:28 -0800 >>> To: SARES mailing list <sares-list@INTERNET. sunnyvaleares.org> >>> Subject: [SARES] house wiring question >>> >>> I am trying to find out which year did the house wiring building >>> codes require three contact wall outlets (with the independent ground >>> connection). >>> >>> Would anyone with expert knowledge tell me? >>> >>> Alternately, I know that houses build in 1938 had two contacts and >>> ones build in 1974 had three. Could people whose houses were built >>> between these years tell me what year their residence was built and >>> how many contacts the wall outlet has? >>> >>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> SARES members mailing list: <sares-list@INTERNET. sunnyvaleares.org> >>> For help with (un)subscription send e-mail to <majordomo@INTERNET. athm.net> >>> >> >> >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> SARES members mailing list: <sares-list@INTERNET. sunnyvaleares.org> >> For help with (un)subscription send e-mail to <majordomo@INTERNET. athm.net> >> >> ______________________________________________________ >> This email was pre-scanned by Spam Guardian >> >> > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ SARES members mailing list: <sares-list@INTERNET. sunnyvaleares.org> For help with (un)subscription send e-mail to <majordomo@INTERNET. athm.net>Received on Thu Dec 20 2007 - 20:41:39 GMT
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