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Article #15709Hot Tub Controller
From: Dan Morera
Date: Thu, 17 Dec 1992 16:56
Date: Thu, 17 Dec 1992 16:56
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1855 bytes
Greetings and Happy Holidays Netters, I am developing a system to remotely control a hot tub, and I have not previously worked with the large AC voltages needed to do so. The hot tub is powered by both phases of the 120V power entering the house. The switch next to the tub does nothing more than connect / disconnect both of the powers from continuing to the blower / heater / pump of the hot tub. What I envision doing is putting two solid state relays in series with the switches, and control the relays with some simple 5V logic. The lines are rated at 60 Amps each, so I have 75 Amp relays with sufficient heat sinking capabilities. The entire circuit will be placed in an environmentally sound box. Also, the wires connecting the relays to the switch are rated at 60 Amps. The logic controlling the relays have 20 mA sink current specifications. What I want to know is if I left anything out. I want this to be safe, but I don't want to pay a contractor to do the work for me (which I may anyway). Any comments or opinions would be appreciated. --- ********************************************************************* * "Could be worse -- could be raining." * Daniel Morera * ********************************************************************* * "No walruses, please" * more_da@pts4.pts.mot.com * *********************************************************************
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!ftpbox!mothost!pts1!mcc44!more_da From: more_da@pts4.pts.mot.com (Dan Morera) Subject: Hot Tub Controller Message-ID: <1992Dec17.165633.9685@pts1.pts.mot.com> Sender: usenet@pts1.pts.mot.com Nntp-Posting-Host: 145.4.50.213 Reply-To: more_da@pts4.pts.mot.com Organization: Paging and Wireless Data Group Date: Thu, 17 Dec 1992 16:56:33 GMT Lines: 29