Hi all, I was not advocating using the safety ground of the 240V cable for a neutral return for a 120V outlet (clearly against code). I have not done a a combined 120/240V run myself but I thought it was possible to get a complete red/black/white/blank cable to do this in a single run. Rummaging around in my supply of electrical wire I found a red/black/white piece of cable but curiously it had no safety ground wire. Anyway, I suppose running two cables from two breakers is still not too much trouble.
AB2TC - Knut Don Wilhelm-4 wrote: > > Chuck, > > I would not advocate using one side of the 240 volt feed and neutral for > a 120 volt feed. If the need is to run 240 volts to the shack as well > as 120 volts, pull two lines, and put a breaker on each of them. Yes, > your "solution" will work with a 3 wire with ground wiring run, but if > split out to two 120 volt sources, the current on the neutral may exceed > expectations for the wire size used. > > A 240 volt AC run can be made with 2 conductors and safety ground. A > 120 volt AC run can be made using 2 conductors and safety ground. If > you want 240 volts, start with a 240 volt run from the service panel, if > you want 120 volt service, start with a 120 volt run from the service > panel. Do not mix the two (even though it "works"). > > Your safety is at stake - stick to the NEC requirements and guidelines. > > 73, > Don W3FPR > help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://elecraft.365791.n2.nabble.com/120V-vs-240V-tp5964845p6030165.html Sent from the [QRO] mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
