I think we have missed the point. Any line powered device that has a conductive enclosure should have that enclosure bonded to the 'green wire'. It is a personnel safety issue. The KPA500 is line powered and has a metal enclosure.
REPLY: Thus my point, the power supply for any radio is powered by AC and should be wired accordingly as suggested with the "green" wire. the KPA500 does *not* use a separate power supply. It has a built-in power supply and so plugs directly into the mains outlet. REPLY: Thank you. I stand corrected that the unit power is directly supplied by AC thus the need for "green" wire. A power supply transformer can't be considered to be totally isolating for safety purposes unless there is a shield between the primary and the secondary that is grounded to the primary. REPLY: I am aware of transformer supplies. I was referencing to switch-mode supplies (transformer less). I believe they have isolation between primary and secondary. Radios using this type of supply should not need the "green" wire to radio. It should go to the power supply itself as explained above. 72 Ron, wb1hga ______________________________________________________________ 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
