| The use of ferrules is recommended for installations with flexible conductors* of the following cross-sections (single conductor installation]: KE61 2.5 - 16 mm2 KE62 16 - 35 mm2 KE63 35 - 70 mm2 KE64 35 - 120 mm2 The use of 240 mm2 flexible conductors is not recommended. *Class 5, according to IEC 228 Second Edition 1978 |