John, Think single point ground (the one at the breaker box end) - it minimizes circulating ground currents. Great for audio (keeps hum off the equipment enclosures, etc.), but of no value for RF.
BTW - are you saying you are working on a bench with a conducting metal top? If so, that is a hazard in itself for any electrical work. Consider what can happen if you accidently contact a high voltage while touching the desk. That is why metallic objects (and anti-static devices) are normally grounded through a 1 meg resistor. 73, Don W3FPR > -----Original Message----- > > In my house I set up my ham shack /workbench in the garage. I > ran 6/3 awg to a subpanel. From their I have everything in the > garage ie washer dryer water heater overhead outlets motion > lights flourescant strip lights 240v heater wired with thhn wire > ran in 1/2 EMT. I even made sure that the track the garage doors > roll up on was bonded to the EMT. Basically anywhere you put a > meter in their its going to read .17 ohms even the metal > steelcase desk is bonded. Along with the filing cabinet. Now I > got those fancy red isolated ground receptacles with the green > delta triangle. The ground screw is not connected to the > mounting strap on the outlet so your ground wire is isolated > except when you connect the ground wire to the ground bar in the > subpanel which is connected through the EMT back to the box > holding the outlet. Maybe I'm missing the point but how is > different from using a regular outlet. And yes I have the > neutral bus seperate from the ground bar per NEC. Their probably > overkill but since I have them might as well use them. > > John wt5y > Sent via BlackBerry from T-Mobile > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.11/575 - Release Date: 12/6/2006 12:22 PM _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
