--===============0097076588== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by pch.mit.edu id n063PKNr010439 For medical application (not familiar with millitary), this distance can = go to 6-8mm or even more. Depending on some weird UL standards. Believe me, we had that problem before. > From: colin@btech-online.co.uk> To: piclist@mit.edu> Date: Tue, 6 Jan 2= 009 10:10:06 +1000> Subject: Re: [EE] Trace clearances for 120/240V> > > = > :: I'm looking for what the minimum clearances are for traces on a> :: = circuit> :: board which will carry 120 or 240VAC. This is essentially for= the> :: relay contacts which may be field wired to either 120 or 240V.> = > For 1oz copper my little dooberflackey says 2.54mm minimum don't > forg= et 6mm clearance from edge of board or connector.> > Colin> --> cdb, coli= n@btech-online.co.uk on 6/01/2009> > Web presence: www.btech-online.co.uk= > > Hosted by: www.1and1.co.uk/?k_id=3D7988359> > > > > > > > -- > http:= //www.piclist.com PIC/SX FAQ & list archive> View/change your membership = options at> http://mailman.mit.edu/mailman/listinfo/piclist _________________________________________________________________ =CE=A2=C8=ED=B5=D8=CD=BC=C2=CA=CF=C8=CD=C6=B3=F6=BF=E7=B3=C7=CA=D0=B6=E0=B5= =E3=BC=DD=B3=B5=C2=B7=CF=DF=B2=E9=D1=AF=A3=A1 http://ditu.live.com/?form=3DMRAHAB&rtp=3Dpos.30.454167_116.308611_%E5%A4= %AA%E6%B9%96__~pos.29.554046_115.983427_%E5%BA%90%E5%B1%B1__~pos.29.11611= 1_110.478889_%E5%BC%A0%E5%AE%B6%E7%95%8C__&rtop=3D0~0~0&encType=3D1 --===============0097076588== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: 7bit -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist --===============0097076588==--