UL 758 2022-01 PDF

Full title and description

UL 758: Standard for Appliance Wiring Material — specification and test requirements for appliance wiring materials (single insulated conductors, multi-conductor cables, optical‑fiber members and related components) used for internal wiring of appliances and for certain external interconnecting cables. This entry covers the redline revision published January 20, 2022 (commonly cited as the 2022‑01 revision of UL 758).

Abstract

UL 758 defines construction, performance and marking requirements and test methods applicable to appliance wiring material (AWM). It is intended to ensure that conductors, insulations, jackets and assemblies used inside appliances, equipment enclosures, or as appliance interconnect cables meet electrical, thermal, mechanical and flame‑resistance criteria referenced to UL horizontal/reference standards. The 2022‑01 release is a redline revision to the existing third edition and updates/modifies test, marking or style requirements as published by Underwriters Laboratories.

General information

• Status: Active standard; third edition (2014) with subsequent redline revisions — redline revision issued January 20, 2022.
• Publication date: Redline revision published January 20, 2022 (document edition originally published May 2, 2014).
• Publisher: Underwriters Laboratories (UL).
• ICS / categories: Electrical wires and cables — ICS 29.060 (commonly classified under 29.060.20 for cables / wire).
• Edition / version: Edition 3 (2014) with the 2022‑01 redline revision (often referenced as UL 758:2022 red line).
• Number of pages: Redline/revision document metadata commonly reported as ~88 pages for the 2022 release (page counts may vary between redline and consolidated editions).

Scope

UL 758 applies to appliance wiring material in the form of single insulated conductors, multi‑conductor cables, optical‑fiber members and individual insulated conductors used as components in multi‑conductor assemblies. The standard covers construction details, temperature and voltage ratings, mechanical and environmental performance, flammability tests and marking/identification requirements for AWM intended for factory wiring of appliances and some external interconnect cables; it excludes types already covered by specific National Electrical Code (NEC) / building‑wiring standards when those are explicitly outside the AWM scope. The standard also references UL horizontal/reference standards for many specific test methods.

Key topics and requirements

• Defined product types and AWM style numbers (single conductors, multi‑conductors, fiber members).
• Conductor construction and material requirements (stranding, copper/tinned copper classes).
• Insulation and jacket material specifications (PVC, XLPE, PTFE and other polymer types) and minimum thicknesses.
• Electrical tests: dielectric/withstand voltage, insulation resistance, conductor resistance limits.
• Thermal/ageing tests: elevated‑temperature exposure, heat‑shock, hot‑wire/temperature‑indexing.
• Mechanical tests: tensile, elongation, bend/flex tests and abrasion/cut‑through resistance where applicable.
• Flame‑resistance testing (VW‑1 / vertical flame test and other referenced methods via UL 1581 / UL 2556 as applicable).
• Marking, identification and style‑number requirements for traceability and permitted temperature/voltage ratings.
• Manufacturing and production verification tests, along with specified sample preparation and conditioning procedures (references to UL reference standards).

Typical use and users

Typical users include appliance and equipment OEMs, wire and cable manufacturers, product safety and compliance engineers, test laboratories and certification bodies. UL 758 is used to develop and certify internal appliance wiring, lead‑assemblies, interconnect cables for appliances and components intended to be processed into multi‑conductor assemblies. It is also referenced by procurement/specification teams and design engineers when selecting AWM for consumer, industrial and commercial appliances.

Related standards

UL 758 commonly cites and is used alongside several reference and neighboring standards, including: UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords), UL 2556 (Wire and Cable Test Methods), UL 62 (Flexible Cords), and several CSA equivalents (for example, CSA C22.2 No. 210 and other wire/cable standards). Designers and certifiers often consult these referenced standards for specific test methods and cross‑approval guidance.

Keywords

Appliance Wiring Material, AWM, UL 758, redline 2022, insulation, conductor, VW‑1, UL 1581, wire and cable testing, appliance internal wiring, style numbers.

FAQ

Q: What is this standard?

A: UL 758 is the Underwriters Laboratories standard titled "Standard for Appliance Wiring Material" that specifies construction, performance and testing requirements for wiring materials used inside appliances and certain interconnecting cables; the 2022‑01 reference denotes a redline revision issued January 20, 2022.

Q: What does it cover?

A: It covers single insulated conductors, multi‑conductor cable constructions, fiber‑optic members used as components, insulation/jacket materials, electrical/thermal/mechanical tests, flammability (VW‑1) and marking/identification rules for appliance wiring material. Many specific test procedures are performed by reference to UL 1581 and UL 2556.

Q: Who typically uses it?

A: Appliance and equipment OEMs, cable/wire manufacturers, product safety and compliance engineers, test labs and certification bodies — anyone specifying, producing, testing or approving AWM for appliances and related equipment.

Q: Is it current or superseded?

A: The underlying third edition was published in 2014 and the document has received multiple redline revisions; the January 20, 2022 redline is a valid published revision. Users should check the publisher (UL) or authorised standards distributors for the most recent consolidated edition or subsequent redlines.

Q: Is it part of a series?

A: UL 758 is one of UL's family of wire and cable standards and is routinely used with reference (horizontal) standards such as UL 1581 and UL 2556; it also sits alongside other product standards like UL 62 (flexible cords) and various CSA/IEC wire and cable standards for cross‑approval contexts.

Q: What are the key keywords?

A: Appliance Wiring Material (AWM), conductor, insulation, jacket, VW‑1, temperature rating, voltage rating, UL 1581, UL 2556, redline 2022.