1.25
为避免过载、防止短路把电线烧坏或过热形成火源，绝缘电线和电缆的允许载流量不得小于熔断器熔体额定电流的1.25倍和自动开关长延时过流脱口器整定电流的1. 25倍。<span style='display: inline !important; float: none; background-color: rgb(253, 249, 205); color: rgb(0, 0, 0); 微软雅黑","helvetica neue","hiragino sans gb"; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 100; letter-spacing: normal; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;'>本题答案：。