When you refer to "mains circuits", does this mean the 'mains' power that enters the building, or is the individual distribution circuit/node being reference ?
Do you mean that a fuse, for an indvidual appliance, is better for protection >from fire than a breaker ? thanks, Brian > -----Original Message----- > From: [email protected] [mailto:[email protected]]On Behalf Of John > Woodgate > Sent: Monday, April 06, 2009 1:47 AM > To: Piotr Galka > Cc: EMC-PSTC > Subject: Re: PoE injectors > > In message <79BF8E9B82E143448258D4EBCD718037@MmPc21>, dated > Mon, 6 Apr > 2009, Piotr Galka <[email protected]> writes: > I explained that if there is accidental contact between an > SELV circuit > in a building and a power circuit, the SELV circuit can go to, and > remain indefinitely at, full mains voltage. While the probability of > such an event is very low, the consequences may be fatal. > > >and less risk of fire. > > Yes, less risk of fire if the mains circuits are protected > by fuses, not > RCDs or GFCIs. > -- > OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk > Things can always get better. But that's not the only option. > John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
