UL 4

Please note: All interim revisions for this edition available at time of your purchase will be included.

The 15th edition is being issued to add provision for color coating the armor and to editorially clarify and technically update the text of the UL 4 Standard.

These requirements cover interlocked steel or aluminum armored cables that contain 2, 3, or 4 No. 14 - 1 AWG insulated circuit conductors with or without grounding conductors and are for use as Type AC Armored Cable in accordance with Article 333 and other applicable parts of the National Electrical Code.

These requirements cover cables for use at potentials of 600 V or less and at temperatures that are not higher than 75C (167F) for Type ACTH or 90C (194F), for Type ACHH and ACTHH depending upon the temperature rating of the insulated conductors used. Cables with aluminum armor are suitable only for use with connectors other than the direct-bearing set-screw type in alternating-current circuits.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.