Andy, hereabouts, you can't even buy outlets or plugs with only 4 leads. Also, I wouldn't know where to buy a 4 lead power cable. It's 3 or 5.
Another thing (but don't tell Brian): in case your motor, 3 phase connected, is wired in "wye" (star), you have a virtual zero, the common central tap of the windings. If your motor is fairly large, a few kW, you can easily use this for a small single phase supply, say an electronic controller, a work light, a soldering iron or so, without unbalancing the motor. The voltage will depend a little on the momentary load of the motor. I use this when making oscilloscope measurements on VFD's where the 3 phase output is floating and no neutral lead is provided. To test the VFD I only connect a little idling 150 W three phase motor to its output. Peter Blodow andy pugh schrieb: > On 11 November 2011 09:25, Peter Blodow <[email protected]> wrote: > > >> In Germany (and most european countries, i think), any electrician >> installing a three phase supply without neutral and protective earth >> would be kicked out of business by law for life time instantly. >> > > 3P + E outlets are perfectly OK in the UK. > > As has been hinted at elsewhere in the thread, it depends what the > single-phase power is for. If it is to power DC supplies and equipment > with internal PSUs like monitors, as long as universal input > (120VAC-240VAC) devices are chosen, it should be no problem. > > ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
