Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site sdcc3.UUCP Path: utzoo!watmath!clyde!cbosgd!ihnp4!houxm!mtuxo!mtunh!vax135!cornell!uw-beaver!tektronix!hplabs!sdcrdcf!sdcsvax!sdcc3!ewa From: ewa@sdcc3.UUCP (Eric Anderson) Newsgroups: net.analog Subject: Re: Dumb electrical question Message-ID: <3074@sdcc3.UUCP> Date: Mon, 11-Nov-85 22:13:24 EST Article-I.D.: sdcc3.3074 Posted: Mon Nov 11 22:13:24 1985 Date-Received: Thu, 14-Nov-85 07:26:30 EST References: <2980@brl-tgr.ARPA> <499@brl-sem.ARPA> Reply-To: ewa@sdcc3.UUCP (Eric Anderson) Distribution: net Organization: U.C. San Diego, Academic Computer Center Lines: 19 In article <499@brl-sem.ARPA> ron@brl-sem.ARPA (Ron Natalie) writes: >> I have large cartridge fuses at the main power input to my house >> electrical circuits. If I blow these fuses, and replace them with copper >> rods, what is the next stage of fusing/protection/damage? >5) The wire between the main fuses and your fusebox may melt. Most likely, whatever is causing the short will fuse, assuming it is an appliance or something, because the wiring inside the house is of a lesser guage than that from the fusebox to the grid. The only case that would cause anything outside of the house/fusebox to fuse would be if the fusebox itself were shorted with larger conductors than those that fed it. Experience dictates that the narrowest conductor (impedence comes into play if different materials are used) will fuse, because the current being constant, will have the greatest density of flow through the narrowest section of wire. Eric Anderson, UC San Diego {elsewhere}!ihnp4!ucbvax!sdcsvax!sdcc3!ewa Home: (619)453-7315 Work: (619)586-1201 White House: (202)456-1414