When I installed my boat lift, 240V 30A service, I had the electrician drop an outlet on the same circuit in the shack. The shack was conveniently on the way to the boat lift.I figure I'll never be using the lift and the amplifier at the same time.The electrician thought it was odd until I explained it...73,Gary K9GS -------- Original message --------From: Jim Brown <j...@audiosystemsgroup.com> Date: 9/20/24 12:49 PM (GMT-06:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Question about 120 volts vs. 240 volts house supply to KPA 500 Excellent design and execution, Bob. Everything about your logic is 100% correct.73, Jim K9YCOn 9/20/2024 9:09 AM, Bob McGraw wrote:> I elected to install a 240 volt 20 amp service to my operating > position. I used some 75 ft of #10-3 w/ground (4 wires) running from > the breaker panel to the operation position. I split off a 120 volt > service from L1, and a second 120 volt service from L2. Thus there is > also a 240 volt service, L1 + L2, for the amp or any amp, past and > present. Thus everything in the station shares a common Neutral and > common Ground. Many issues are resolved using this approach. Besides, > our house was wired with those stab on outlets, of which I have had to > replace many due to poor connections.> > Yes I know that #10 is rated for a 30 amp service. Due to the length of > the run from the breaker panel to the desk, I choose a larger gauge of > wire to assure less voltage drop. Besides, crawling through the attic > pulling a #10-3 is the same effort as pulling a #12-3. At the breaker > panel, the service is protected by 2 individual 20 amp breakers. I did > not use a ganged 2 pole breaker.> > No ground issues, no hum issues, no buzz issues and no RFI issues.______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to k...@gjschwartz.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net
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