At 09:44 PM 5/5/2015, RussellMc wrote: >Questions: > >1. Would you expect the arrangement described below in a domestic applianc= e >(Say a halogen bulb based desk lamp). > >2. Would you expect it to meet regulatory standards? >(Bonus - what standards does or doesn't it meet. ) Yes. Class 2 wiring: current limited with non-field-repairable=20 over-current device (self-resetting over-current device is acceptable). >3. Is it safe? Usually. A dead short is definitely safe. >4. Would you have such in your home? Yes. 12V desk lamps are common. >5. Do you know f you have one? Yes - I have two desk lamps that meet your description. Both=20 currently do NOT work due to dead bulbs. Because I like the look of=20 one of the units, I plan to eventually replace the halogen lamp with=20 LED. Eventually. >*Appliance:* > >Domestic market appliance. >12 VAC 2A+ iron core transformer >Assume transformer meets requlatory requirements for isolation etc - ie >there are no short to mains or similar issues. >This is about the low voltage aspects. > >12VAC accessible on extremely easily accessible largish area [tm] contacts= .. --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .