Jackson, William L wrote: > > Good Morning List, > > Does anyone know of any standards that provide guidance on where in-line > fuses must be located in relation to the power switch; 1) before the > switch, that is connected to the EMI filter or line, or 2) after the switch > ( to the load side)? The power switch and and fuses (LN) are both on the > front panel of an electronic drawer which primary power is 115VAC. We have > researched both the IEC 950 standard and the 1990 National Electrical Code > book and found no clear guidance. Also I would be interested in your > thoughts on the rationale or justification for location. > > TIA > Bill Jackson > Product Safety > Harris Corp > RF Communications Div > [email protected]
The location of primary fuses has always been more of a common sense thing for me. It should be the first device in the product that is connected to the hot ac line. The fuse is a sfaety device and connecting anything that could "fail" before a fuse is defeating its intended purpose. Just my two cents. ******************************************************* ------------------------------------------------------- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. ------------------------------------------------------- *******************************************************
