IEC 규격 전선의 허용전류 산정방법
좀 더 정확한 값이 필요한 경우 IEC 60287에서 규정하는 계산방법으로 계산한다. 3. 보정계수는 매설깊이가 0.8 m인 닥트에 적용할 수 있다. 6) 복수 회로로 포설된 그룹(IEC 60364-5-52의 523.5) o 그룹보정계수(group reduction factors)는 동일 최대허용온도를 가진 절연
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