4H10

4H10 is a Mineral insulated cables (MICC, IEC 60702-1 grades) cable designation: H = Heavy duty grade, 750 V (450/750 V): mineral insulated copper cable; the number before the letter counts the cores, the number after it is the conductor in mm2; 4H10 = 4H10: mineral insulated copper cable, heavy duty 750 V, 4 x 10 mm2, 14.8 mm over the copper sheath (16.5 mm with the LSZH covering). 450/750 V; copper sheath 70 C covered or exposed to touch, 105 C bare and out of reach. IEC 60702-1 / BS EN 60702-1 (as the makers cite it; not held here).

1 coding system recognises this code

Mineral insulated cables (MICC, IEC 60702-1 grades)

SymbolMeaning
HHeavy duty grade, 750 V (450/750 V): mineral insulated copper cable; the number before the letter counts the cores, the number after it is the conductor in mm2
4H104H10: mineral insulated copper cable, heavy duty 750 V, 4 x 10 mm2, 14.8 mm over the copper sheath (16.5 mm with the LSZH covering). 450/750 V; copper sheath 70 C covered or exposed to touch, 105 C bare and out of reach. IEC 60702-1 / BS EN 60702-1 (as the makers cite it; not held here)

What is 4H10 cable?

4H10: mineral insulated copper cable, heavy duty 750 V, 4 x 10 mm2, 14.8 mm over the copper sheath (16.5 mm with the LSZH covering). Rating: 450/750 V; copper sheath 70 C covered or exposed to touch, 105 C bare and out of reach. Standard: IEC 60702-1 / BS EN 60702-1 (as the makers cite it; not held here).

Documents and pages the readings were taken from

  • Wrexham Mineral Cables, Wrexham Mineral Cables catalogue, Standard Conductor Cable tables, pp. 20 to 21: https://electricaldirect-assets.s3.amazonaws.com/product-documentation/technical/835702.pdf [seen: manufacturer]
  • nVent Pyrotenax, nVent Pyrotenax MI Wiring Cable System brochure, Pyro MI Cable System Data, p. 10: https://www.topazfiresystems.com/images/special-systems/micc/MICC%20Cable.pdf [seen: manufacturer]
  • KME Italy, KME Italy MICO mineral insulated cables brochure, Cable technical data, p. 10: https://www.kme.com/fileadmin/DOWNLOADCENTER/COPPER%20DIVISON/6._Mineral_Insulated_Cables/Mineral_Insulated_Cables_Manuals_KME_Italy_Spa/Brochure_KME_Italy_MICO_Mineral_Insultated_Cables.pdf [seen: manufacturer]

Mineral insulated cables (MICC, IEC 60702-1 grades): how to read the cable type names

4H10 as the cable designer builds it, 4x10 450/750 V

Overall diameter 14.8 mm, about 910 kg/km. Nominal values from the standard's tables for this size, computed, not a maker's data.

LayerMaterialThickness, mmOver the layer, mm
InsulationCompressed magnesium oxide (MgO)0.965.5
Metal sheath (lead or smooth aluminium)Copper0.7814.8

4H10 on a drum

The smallest drum that passes every check, for 14.8 mm and about 910 kg/km as the cable designer builds it. Drums as their makers print them; lengths are estimates: whole layers wound nested (each turn in the groove of the layer below), wound diameter 1.05 × OD, 50 mm freeboard under the flange rim. Cable makers' own tables print less, as they count aligned layers.

LengthDrum size (its makers)LayersGross weight
500 mKTG 9 (900 mm flange), wood KTG drums (Europe), Bayka, KTG9 of 12502–506 kg
1,000 mKTG 12 (1250 mm flange), wood KTG drums (Europe), Bayka, KTG10 of 191,054–1,075 kg

Barrel at least 15 × OD = 222 mm for a cable of this kind (Low voltage, multi-core): KTG table, the cable's datasheet wins. A load rating is the drum maker's own.

Other lengths, drums and weights: the cable drum calculator

Load it on a truck: 1000 m on its drum in the loading planner

Laying, sizes and datasheet: 4H10

Current rating and voltage drop: One circuit, C: cable on a wall, 30 °C air: about 81 A. At that current over 100 m, three-phase 400 V, cos φ 0.9: a voltage drop of about 7 %. Sources: IEC 60364-5-52:2009, Table B.52.7, p. 46; IEC 60228:2023 Table 3, p. 12; IEC 60228:2023 Annex B, p. 18; IEC 60364-5-52:2009 (ed. 3.0) Annex G (informative), pp. 74 to 75 (read in the standard text) Cable size calculator: smallest section for a load, every factor shown · Voltage drop calculator: IEC 60364-5-52 method and limits

Selling this cable? Open it in the designer and get a datasheet with your logo (Pro). Open the cable designer · See Pro

Work with 4H10

Who makes or stocks this cable?

Makers and stockists of this cable family appear here as sponsors for your region, each marked "Sponsored"; a listing never changes what this page says about the cable.

Related cables

More Mineral insulated cables (MICC, IEC 60702-1 grades) designations

4H10