Hi Larry Yeh that's what I thought but something still niggles.
125VAC at 3 amps should be roughly equilvalent to 14VDC at 27 amps. I ought be OK but somehow the latter seems excessive? 125VAC at 3 amps relates to 125VDC at only 0.375 amps by Jim's rule of thumb, that is, voltage being equal, DC current rating is about 1/8 of AC but it can vary depending on switch quality according to Aeroelectrics. Aeroelectrics also says "in a nutshell, 125VAC ratings equate favourably and conservatively to 14VDC ratings -as long as the switch has a healthy snap action"....the latter to minimise arcing time. ...and so I am relieved in some ways but still curious about what is causing my 1/2 volt drop across the switches... maybe they are arcing internally and building up a resistance or maybe they're just dirty...either way as Jim suggests, they're headed for the bin. See Ya The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnj...@chc.net.au ----- Original Message ----- From: "larry severson" <lar...@socal.rr.com> To: "KRnet" <kr...@mylist.net> Sent: Saturday, December 20, 2003 11:35 AM Subject: Re: KR>Switch Ratings > > But does the 1/8 rule apply to unequal voltages? > >Would 125 VAC 3 amps really equate to 12VDC 0.375amp!! > > Watts are volts X amps. You are talking 375 watts (AC) vs 4+ watts (DC). > You went the wrong way way with the 1/8. > > > Larry Severson > Fountain Valley, CA 92708 > (714) 968-9852 > lar...@socal.rr.com > > > _______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html >
