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Article #2481Re: Ideas for auto-on circuit for 220 vac?
From: Peter Bennett
Date: Thu, 28 Jun 2001 02:56
Date: Thu, 28 Jun 2001 02:56
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2366 bytes
On Wed, 27 Jun 2001 17:05:47 -0700, DaveC <anon@example.net> wrote: >> You can just wire a "regular" relay coil of the appropriate voltage across >> ONE of the hot lines to each three phase load and to each regular (single >> phase) load. As above, you put the contacts in parallel to operate the >> vacumn motor. > >What do you mean "across one of the hot lines"? Do you mean to put the relay >coil between the source (circuit breaker terminal) and the load (the equpment >motor switch)? This would require quite a significantly large coil wire size. >These devices pull large (10 amps) at 220 vac/3-phase. He means to connect the relay coil in parallel with the motor - either between one phase and neutral (use a 120 volt relay), or between two phases (you'll need a 208 or 220 volt relay here). -- Peter Bennett, VE7CEI new newsgroup users info : http://vancouver-webpages.com/nnq GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver-webpages.com/van-ps
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,9fac0384d7c8fda4 X-Google-Attributes: gid112d1e,public X-Google-Thread: 1131b0,92c2e91c9ac17815 X-Google-Attributes: gid1131b0,public X-Google-Thread: 10d137,92c2e91c9ac17815 X-Google-Attributes: gid10d137,public X-Google-Thread: 107cee,92c2e91c9ac17815 X-Google-Attributes: gid107cee,public X-Google-Thread: 103407,92c2e91c9ac17815 X-Google-Attributes: gid103407,public X-Google-ArrivalTime: 2001-06-27 19:53:04 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!newsfeed.google.com!sn-xit-02!sn-post-01!supernews.com!news.supernews.com!not-for-mail From: Peter Bennett <peterbb@interchange.ubc.ca> Newsgroups: sci.electronics.design,sci.electronics.misc,alt.engineering.electrical,aus.electronics,sci.electronics.repair Subject: Re: Ideas for auto-on circuit for 220 vac? Date: Wed, 27 Jun 2001 19:56:10 -0700 Organization: Home for the Hopelessly Helpful Message-ID: <a56ljt8gmul3tmjg5gl74393rv018ub2md@news.supernews.com> References: <01HW.B75F3E26002EF2D601D72810@news.dnai.com> <3b3a6fbd$0$3495@dingus.crosslink.net> <01HW.B75FC2EB000511B30504A330@news.dnai.com> X-Newsreader: Forte Agent 1.8/32.548 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: newsabuse@supernews.com Lines: 24