First best wishes for a Merry Christmas and Happy New Year!
I think I chose a 25A twist-lock receptacle for my 4KV-1A PS. I ran 8-3 plus No. 10 safety ground cable because I did want to split out 120vac to two duplex outlets using two separate 20A breakers. That gives me 120v for my station 12v-50A supply and a Motorola 26v/12v PS that powers my HF 300w and 222-MHz 150w PA's. 120v also goes to the HVPS and last outlet powers my mini mw oven (for heating coffee, etc.). I will add another 25A outlet for the 50v-50A PS for my 1100w 6m linear that is planned to be added, soon.
Having the 240v 20A breaker in the room is handy if the PS trips it off. Took me about half a day to run it.
The bedroom that serves as my ham shack has standard No. 12 romex run to the outlets that power the computer stuff, lights and some small wall warts, wx station, 24v PS for my relays. Outlets are typical 15A rating.
My home has a 4-foot high crawl space so running the 240v line was easy. I drilled a hole in the floor of the utility room where the main load center is located and ran PVC conduit from box to floor. I did the same thing in the bedroom next to the wall where my radio rack is installed. The HVPS outlet is wired with a short run of No. 10 thru conduit to standard metal surface 4x4 box with single 25A outlet.
I see about 3v sag in 240vac when I key my 8877 at 1400w (draws 3.8kV@700ma on anode). the 240v run is about 35-foot. The extra remnant of the 8-3 wire was used to wire my 6500w Honda generator into a 200A cutover switch mounted next to my meter box.
I have just enough of the 8-3 left to use for wiring 28vdc at my dish for my 1296 300w amplifier from the 18A Astron PS that sits in a wx-tight box under the 16-foot dish.
73, Ed ---------- From: Jim Brown <j...@audiosystemsgroup.com> To: Reflector Elecraft <elecraft@mailman.qth.net> Subject: [Elecraft] 240V Line Message-ID: <549b087e.1010...@audiosystemsgroup.com> Content-Type: text/plain; charset=utf-8; format=flowed Installing a 240V outlet is not a big deal unless the construction of your home makes it difficult to run the cable. Barring that, a competent electrician should be able to do that in a half day; a difficult run could double the work. All that is required is a pair plus a Green wire. If you also want 120V outlets from the same circuit, you'll need another conductor for the neutral. A single 20A 120/240V circuit will run all the ham gear in most stations, even for SO2R. If you're smart, you'll use #10 copper, 20A outlets, and a 20A breaker. While #10 is rated for 30A, our stations don't need 30A, but the bigger copper will reduce the voltage drop. There are MAJOR advantages to running all the gear in our stations from outlets that share the same Green wire, or outlets whose Green wires are bonded together. See http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.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 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
