ul-1072.4

Medium-Voltage Power Cables

UL 1072

1 Scope

1.1 These requirements cover the shielded and nonshielded medium-voltage power cables that are described in Tables 1.1 (single-conductor) and 1.2 (multiple-conductor). Multiple-conductor cables may include one or more individually jacketed non-conductive optical-fiber members. These electrical and hybrid electrical and optical-fiber cables are for use (optical and electrical functions associated in the case of a hybrid cable) in accordance with Article 328 and other applicable parts of the National Electrical Code (NEC), ANSI/NFPA 70.

1.1 revised September 19, 2007

1.2 These cables have one or more stranded copper or aluminum conductors that are insulated with a solid, extruded dielectric. Cables that have a metal sheath or interlocked armor incorporate an effective grounding path. A grounding conductor is optional in other cables. Cables for direct burial are so marked and have an overall covering (see 1.4 for direct-burial cables that are not covered). Cables that are for use in cable trays generally are so marked (see 62.1 and 62.2). Cables that are sunlight-resistant generally are so marked (see 64.1 - 64.3). Cables that are marked "MV-90" or "MV-90 dry" have a maximum operating temperature of 90C (194F). Cables that are marked "MV-105" have a maximum operating temperature of 105C (221F) for use where design conditions require a maximum conductor temperature above 90C (194F). Cables that are marked "dry" have insulation for use only in dry locations. All other cables have insulation that is for use in both wet and dry locations. Multiple-conductor cables that include one or more optical-fiber members are surface marked to so indicate. Cables that are marked "oil resistant II" are for exposure to mineral oil at temperatures not in excess of 75C (167F). Cables that are marked "oil resistant I" are for exposure to mineral oil at temperatures not in excess of 60C (140F).

1.3 A multiple-conductor Type MV cable that has a smooth (other than lead) or corrugated metal sheath or that has interlocked metal armor may be marked for use also as Type MC cable.

1.4 This standard does not include requirements for cables with concentric neutral conductors. However, it is possible to have a single-conductor cable with a concentric neutral conductor manufactured in accordance with the requirements of other standards, that meets the requirements for jacketed single-conductor shielded cable in this standard.Table 1.1Single-conductor Type MV cables
Voltage rating Size Use Insulation material Percent insulation level Insulation thicknesses Shield Overall covering
8 AWG - 1000 kcmil 90C (194F) dry XLPE or EPCV - Column A Table 15.3 nonshielded None
2400 90C (194F) dry XLPE, EPCV, DREP, or EP - Column B Table 15.3 nonshielded Nonconductive jacket Column B Table 27.20
90C (194F) wet or dry XLPE, DREP, or EP - Column C Table 15.3 nonshielded Nonconductive jacket Column C Table 27.20
5000 8 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100 or 133 Table 15.1 or Table 15.2 Shielded a
8000 6 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1 or Table 15.2 Shielded a
15000 2 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1 or Table 15.2 Shielded a
25000 1 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1 or Table 15.2 Shielded a
28000 1 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1 or Table 15.2 Shielded a
35000 1/0 AWG - 2000 kcmil 90C (194F)or105C (221F)wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1 or Table 15.2 Shielded a
a The overall covering consists of one of the following (see Table 26.1 for complete descriptions):
1) Conductive nonmetallic insulation covering (Table 17.3) as part of shielding, with or without nonmagnetic metal sheath or armor over conductive nonmetallic insulation covering as part of shielding, with or without supplementary non-conductive jacket (Table 29.1) over metal sheath or armor.
2) Non-conductive jacket (Table 27.18) over shielding, with or without nonmagnetic metal sheath or armor over non-conductive jacket, with or without supplementary non-conductive jacket (Table 29.1) over metal sheath or armor.
3) Nonmagnetic metal sheath or armor as part of shielding, with or without supplementary non-conductive jacket (Table 29.1) over metal sheath or armor.
Table 1.2 Multiple-conductor Type MV cables
Voltage rating Circuit conductors Grounding conductor Overall covering
Size Use Insulation material Percent insulation level Insulation thicknesses Shield Individual covering
2400 8 AWG - 1000 kcmil 90C (194F) dry XLPE or EPCV - Column A Table 15.3 nonshielded None Optional Covered 23.1 None - assembly of single-conductor cables
90C (194F) dry XLPE, EPCV, DREP, or EP - Column B Table 15.3 nonshielded Non-conductive jacket Column B Table 27.20 Optional Covered 23.1 None - assembly of single-conductor cables
90C (194F) wet or dry XLPE, DREP, or EP - Column C Table 15.3 nonshielded Non-conductive jacket Column C Table 27.20 Optional Covered 23.1 None - assembly of single-conductor cables
90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP Column C Table 15.3 nonshielded None or Non-conductive jacket (Table 19.1) Optional Bare 23.5 Non-conductive jacket (Table 27.18)
- Required Bare 23.1 Interlocked armor with or without Supple-mentary jacket
May be required Bare 23.3 and 23.4 Metal sheath with or without Supple-mentary jacket
5000 8 AWG - 2000 kcmil 90C (194F) or 105C (221F) XLPE, DREP, or EP 100 Table 15.1, Table 15.2 Shielded Non-conductive jacket (Table 27.18) over shield Optional Covered 23.1 None
Conductive nonmetallic insulation covering (Table 17.3) as part of shield Optional Covered 23.1 None
Metal sheath as part of shield with or without Supplementary jacket Optional Covered 23.1 None
8000 6 AWG - 2000 kcmil 90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1, Table 15.2 Shielded None or Non-conductive jacket (Table 19.1) Optional Bare 23.5 Non-conductive jacket (Table 27.18)
Required Bare 23.1 Interlocked armor with or without Supple-mentary jacket
15000 2 AWG - 2000 kcmil 90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP 100, 133, or 173 May be required to Bare 23.3 and 23.4 Metal sheath with or without Supple-mentary jacket
Non-conductive jacket (Table 27.18) over shield Optional Covered 23.1 None
25000 1 AWG - 2000 kcmil 90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP 100, 133, or 173 Conductive nonmetallic insulation covering (Table 17.3) as part of shield Optional Covered 23.1 None
Metal sheath as part of shield with or without supplementary jacket Optional Covered 23.1 None
28000 1 AWG - 2000 kcmil 90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1, Table 15.2 None or Non-conductive jacket (Table 19.1) Optional Bare 23.5 Non-conductive jacket (Table 27.18)
Required Bare 23.2 Interlocked armor with or without Supple-mentary jacket
May be required Bare 23.3 and 23.4 Metal sheath with or without Supple-mentary jacket
35000 1/0 AWG - 2000 kcmil 90C (194F) or 105C (221F) wet or dry XLPE, DREP, or EP 100, 133, or 173 Table 15.1, Table 15.2 Shielded Non-conductive jacket (Table 27.18) over shield Optional Covered 23.1 None
Conductive nonmetallic insulation covering (Table 17.3) as part of shield Optional Covered 23.1 None
Metal sheath as part of shield with or without Supplementary jacket Optional Covered 23.1 None


UL 1072 references these Standards: 486A-486B * 1581 * 1685 * .

Table of Contents for UL 1072.