In a electrical installation of the third kind, which has been engineer by a manufacturer and approved, I have seen that some electrical contractors would not bid this project because it did not meet there work standards.
In this case the manufacturer was the Boeing Company and the installation was a Air Force Missile installation. The work was a buss line which was a very large conduit that held cables of several different voltages from 600 vac 60 cycle, 110/210 vac 400 cycle, 28 DC 400 amp, low voltage control circuits and comm circuits. All the wiring in the same conduit had to have the same voltage rating as the highest rating of the 600 volt insulation wire and had the same temperature rating. The power wiring had double shielding where the inner shield is call a bleeder shield which dissipates the frequency. The control and comm wire also had double shields where the inside shields were grounded to a isolated ground and the outer circuit to a standard electrical ground. This is how I install the circuits in my EV. Ran a electrical bus way through the center of the vehicle under the center console from the motor bay fire way back to the rear control panel. The wire way had a separating steel panel which allow difference voltages and frequency in the same wire way. All my control , comm, and radio circuits are double shield. There is no static on my radio even on the AM band. My power wires have large cadmium plated copper shields the I slid over the 2/0 power cables. The smaller control cables are also install in black flexible conduit which are connected to aluminum terminal panels with black box connectors. See Thomas and Betts wiring systems and devices for this type of installation. Also Wire Mold G-3000 , G-4000 and G-6000 wire ways. Roland ----- Original Message ----- From: EVDL Administrator via EV<mailto:[email protected]> To: [email protected]<mailto:[email protected]> Sent: Wednesday, May 28, 2014 9:45 AM Subject: Re: [EVDL] Cable Compatibility Within Conduits On 27 May 2014 at 14:40, Jan Steinman via EV wrote: > I'd be tempted to run two conduits, one with the low side cables, > and the other with the high side cables. I don't know what you mean by low side and high side in this context. If you mean positive and negative, I'd have to disagree. You'll radiate more noise that way, no? My understanding is that conductors with opposing current flow should always be kept together to reduce noise emission. I think that's at least one reason that wiring code requires all the circuit's conductors to be in the same conduit. But perhaps I'm misunderstanding what you mean by low side and high side. Could you please clarify? David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/<http://www.evdl.org/help/> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/<http://www.evdl.org/help/> . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub<http://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140528/fee1f6a2/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
