Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Wed, 24 Mar 2004 19:03:18 -0500 Message-ID: X-Original-Return-Path: Received: from fed1mtao05.cox.net ([68.6.19.126] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3119116 for flyrotary@lancaironline.net; Wed, 24 Mar 2004 18:34:42 -0500 Received: from smtp.west.cox.net ([172.18.180.57]) by fed1mtao05.cox.net (InterMail vM.5.01.06.08 201-253-122-130-108-20031117) with SMTP id <20040324233439.FBTS2451.fed1mtao05.cox.net@smtp.west.cox.net> for ; Wed, 24 Mar 2004 18:34:39 -0500 From: Dale Rogers X-Original-To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] don't shorten a breaker protected circuit - X-Original-Date: Wed, 24 Mar 2004 18:34:41 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Original-Message-Id: <20040324233439.FBTS2451.fed1mtao05.cox.net@smtp.west.cox.net> Hi All, Bill Dube wrote: > You didn't mention the brand or model of the breaker. If it is > rated for the voltage, it should survive a short without a problem. > A lot of switches and breakers are rated for A/C; the D/C current capacity is almost always significantly lower than the A/C rating. It is good practice to "short" a circuit via a wire-wound high-wattage resistor, say, 10 Ohms / 50 watts. Nevertheless, I'd call a breaker defective if it burned up on a single shorting - that's what a *fuse* is supposed to do. ;^) Dale R.