Peter, Is it your interpretation of this paragraph that points A,B and C on the previously attached diagram cannot be considered to be protectively earthed.
Sorry to labour the point but I can't see how we can classify a circuit as protectively earthed when only one point in the circuit is at this potential. (0.5 Ohms or less). Regards, Alan. Peter Tarver wrote: > Refer to the last paragraph of Note 6 to Table 0.1 in IEC60950/A4, assuming > of course, that's the standard you're interested in. > > Regards, > > Peter L. Tarver > Nortel > [email protected] > > > -----Original Message----- > > From: Alan Booth [SMTP:[email protected]] > > Sent: Tuesday, July 14, 1998 4:49 AM > > > > Dear Treggers, > > > > Thanks for your responses on protective earthing. > > > > When considering the protectively earthed SELV circuit below are all > > points of the circuit (A,B and C) deemed to be connected to protective > > earth or just the current return leg. > > > > Thanks again, > > > > Alan Booth. << File: selv.gif >>
