60245 IEC 66

What is 60245 IEC 66 cable?

60245 IEC 66: heavy polychloroprene sheathed flexible cable, 450/750 V. Rating: 450/750 V; 1 to 5 cores, class 5: 1 core 1.5 to 400 mm2, 2 cores 1 to 25, 3 cores 1 to 95, 4 cores 1 to 150, 5 cores 1 to 25; IE4 rubber insulation, SE4 sheath (above 10 mm2 also SE3 inner and SE4 outer layer); 60 C (IEC 60245-4 cl. 5, Table 5). Standard: IEC 60245-4 (clause 5); HD 22.4 (HAR H07RN-F).

IEC 60245-4 (standard): a heavy polychloroprene or equivalent synthetic elastomer sheathed flexible cable; 450/750 V; 1, 2, 3, 4 or 5 class 5 conductors; IE4 rubber insulation 0.8 mm (1 mm2) to 2.8 mm (400 mm2); optional proofed textile tape on cores above 4 mm2; SE4 sheath in one layer, or above 10 mm2 (multicore) two layers, SE3 inner and SE4 outer; Table 5: single core 1.5 to 400 mm2 (mean overall diameter 5.7 to 7.1 mm up to 37.4 to 46.8 mm), two cores 1 to 25, three cores 1 to 95, four cores 1 to 150, five cores 1 to 25 mm2; low-temperature tests only to 16 mm2 (5.4); 60 C in normal use (5.5). Makers: Helukabel p.12 (manufacturer): Polychloroprene sheathed flexible cable 07RN, H 07RN-F, 450/750 V, HD 22.4 S3, 245 IEC 65 and 245 IEC 66 (see 60245 IEC 65). Code designation (IEC 60245-1:2003+A1:2007 Annex A, p. 21 to 22): the first numeral is the basic class (0 non-sheathed for fixed wiring, 5 normal duty flexible, 6 heavy duty flexible, 7 special duty, 8 special application), the second the type within the class, so the number is read whole. The old spelling drops the 60 ('227 IEC 53' = '60227 IEC 53', IEC renumbering); Helukabel's table prints 227 / 245, EN-JV and Top Cable 60227. Core colours (IEC 60245-1:2003+A1:2007 4.1.2, p. 9): one and two cores no preferred scheme; three cores green-and-yellow, blue, brown or brown, black, grey; four cores green-and-yellow, brown, black, grey or blue, brown, black, grey; five cores green-and-yellow, blue, brown, black, grey or blue, brown, black, grey, black; above five cores by colour (green-and-yellow and blue in the outer layer) or by number (4.2). Drawn with the green-and-yellow set when the size says so (3G1.5), otherwise the set without it; two cores are drawn brown and blue (the HD 308 pair, as the standard prefers none); above five cores black numbered cores, the green-and-yellow core last. China: GB/T 5013.4-2008 is an identical adoption (IDT) of IEC 60245-4:2004 (SAMR record, checked 2026-11-09; the portal serves no text of it), so its values are this edition's. JB/T 8735.2-2016 (read in an English translation, site/burn-n18): its YCW (450/750 V, IE4 insulation, SE4 sheath or SE3 inner and SE4 outer layer; 6.4, 6.6) lists only what Table 5 here leaves out: 2 cores 35 to 95, 3 cores 120 and 150, 5 cores 35 to 150 mm2 and the 3+1, 3+2 and 4+1 builds from 2.5 mm2 (Table 7), so the YCW of this type's sizes is 60245 IEC 66 (GB/T 5013.4). Its YC is the SE3 sheathed heavy cable: 1 core 1 to 400 mm2 (the 1.5 and 400 mm2 mean overall diameters as here), 2 cores 1 to 95, 3 to 5 cores 1 to 150 mm2 (Tables 2 and 6).

Documents and pages the readings were taken from

• IEC 60245-4 ed. 3.0 (2011): clause 5 p. 13 to 14, Table 5 p. 15 to 16
• IEC 60245-1 ed. 4.1 (2003 + A1:2007): Annex A code designation p. 21 to 22; 4.1.2 preferred core colours p. 9, 4.2 cores by number pp. 9 to 10
• Helukabel 'Technical Information', table 'Comparison of harmonized cables with IEC, DIN VDE and HD', pdf p.12

IEC 60227 / IEC 60245 type numbers: how to read the cable type names