UL 588 2021-10 PDF

Full title and description

St UL 588: "Seasonal and Holiday Decorative Products" — requirements and safety tests for temporary-use and factory‑assembled seasonal decorative lighting and outfits (string lights, wreaths, lighted figures, tree‑tops, pre‑lit trees and similar decorative products) intended for connection to nominal 120 V circuits. This entry corresponds to the UL 588 revision published in October 2021.

Abstract

UL 588 establishes construction, performance, marking and test requirements to reduce fire, shock and mechanical hazards associated with seasonal and holiday decorative products. The standard covers temporary-use seasonal decorative-lighting products (typically installed and used for periods not exceeding 90 days), factory‑assembled string lights (series- or parallel-connected), decorative outfits (wreaths, stars, light sculptures, blow‑molded figures, animated displays), adapters/ornaments intended to replace push‑in lamps, and related accessories; it excludes permanently connected products, non‑seasonal lighting intended for general illumination, cord sets and certain other product classes expressly covered by other UL standards.

General information

• Status: Active and maintained; edition in-force with multiple redline revisions recorded since 2021.
• Publication date: October 2021 (redline entry dated October 27, 2021).
• Publisher: Underwriters Laboratories (UL).
• ICS / categories: Lighting and decorative electrical products; domestic/commercial electrical appliances and safety (examples: 97.100 / 97.200 style classifications used for related UL standards).
• Edition / version: Edition 19 (UL 588, Edition 19 — revision circulated with redline dated October 2021).
• Number of pages: Approximately 183 pages (PDF listing for the October 2021 redline edition lists ~183 pages).

Scope

Applies to temporary-use seasonal decorative-lighting products and accessories with maximum input rating of 120 V used in accordance with the National Electrical Code. Covers factory‑assembled seasonal lighting strings (series and parallel configurations with specified lampholders), decorative outfits such as wreaths, simulated-branch trees and wreaths, blow‑molded or animated figures, tree tops, controllers, motorized displays, and ornaments designed to replace push‑in lamps in series strings. Exclusions include permanently connected products, nightlights (covered by UL 1786), rope/flexible lighting not part of decorative outfits (UL 2388), cord sets and temporary power taps, and portable electric lamps intended chiefly for general illumination (UL 153). Products exceeding certain size thresholds (e.g., larger artificial trees or wreaths) may require additional fire testing per special outlines of investigation (for example, UL 2358).

Key topics and requirements

• Electrical ratings and marking: maximum input (nominal 120 V) and clear marking of intended use, voltage and connection type.
• Temporary-use definition and related endurance: guidance for products intended for use not exceeding 90 days per installation.
• Mechanical construction and component requirements: lampholders (push‑in, midget/intermediate screw types), cord and strain‑relief construction, insulation, spacing and protective barriers.
• Flammability and fire testing: material flammability evaluations and, for larger pre‑lit trees or outfits, additional fire test outlines (e.g., UL 2358 where applicable).
• Temperature rise, abnormal operation and ground-fault protection considerations for certain configurations.
• Requirements and exclusions that reference other UL standards (coordination with UL 153, UL 1786, UL 2388, UL 1088, etc.).

Typical use and users

Manufacturers, test laboratories and certification bodies working in the seasonal and decorative lighting industry; product designers and compliance engineers preparing factory‑assembled string lights, wreaths, pre‑lit trees and other holiday decorative products for U.S. market sale; retail quality and sourcing teams evaluating supplier compliance; and UL/third‑party field evaluators. Regulators, safety engineers and retail product safety teams consult the standard when assessing product safety and labeling for consumer seasonal products.

Related standards

Relevant related and cross‑referenced standards include UL 153 (Portable Electric Luminaires), UL 1786 (Direct Plug‑In Nightlights), UL 2388 (Rope Lights / Flexible Lighting Products), UL 1088 (Temporary Lighting Strings), UL 2358 (fire tests for pre‑lit artificial seasonal trees and items), UL 62 (Flexible Cords and Cables), UL 94 (Flammability of Plastic Materials), and UL 8750 (LED equipment requirements). These referenced standards are used for component-level requirements and to define exclusions or where separate coverage applies.

Keywords

UL 588, seasonal lighting, holiday decorative products, string lights, pre‑lit trees, wreaths, temporary‑use, lampholders, 120 V, flammability, UL standard, edition 19.

FAQ

Q: What is this standard?

A: UL 588 is the Underwriters Laboratories safety standard that specifies construction, performance, marking and test requirements for seasonal and holiday decorative products such as factory‑assembled string lights, wreaths, pre‑lit trees and similar decorated outfits.

Q: What does it cover?

A: It covers temporary‑use seasonal decorative lighting and accessories rated for nominal 120 V (strings, outfits, ornaments designed for series strings, controllers, tree stands/poles, etc.), including many factory‑assembled decorative products; it excludes permanently connected products, many general‑illumination luminaires, cord sets and products specifically covered by other UL standards. The standard defines temporary use as typical installations not exceeding 90 days.

Q: Who typically uses it?

A: Product manufacturers, compliance and safety engineers, test labs, certification bodies, and retail safety teams involved with seasonal decorative lighting and related consumer products.

Q: Is it current or superseded?

A: The October 2021 redline/revision is an active edition (Edition 19) and UL maintains subsequent redline updates; users should confirm the publisher’s site or the most recent redline/revision notice for any later amendments before relying on the standard for certification or design work.

Q: Is it part of a series?

A: UL 588 is a standalone UL standard for seasonal decorative products but is closely coordinated with other UL standards (for components and exclusions) such as UL 153, UL 1786, UL 2388, and others referenced within UL 588.

Q: What are the key keywords?

A: Seasonal lighting, holiday decorations, string lights, pre‑lit trees, wreaths, temporary use, lampholders, 120 V, flammability, UL 588.