ANSI UL 458 - Page 7

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UL COPYRIGHTED MATERIAL –

NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

DISTRIBUTION WITHOUT PERMISSION FROM UL

DECEMBER 14, 1993

(Title Page Reprinted: October 15, 2004)

UL 458

Standard for Power Converters/Inverters and Power Converter/Inverter

Systems for Land Vehicles and Marine Crafts

The ﬁrst, second, and third editions were titled Power Converters and

Power-Converter Systems for Recreational Vehicles.

First Edition – February, 1977

Second Edition – May, 1986

Third Edition – November, 1991

Fourth Edition

December 14, 1993

The most recent designation of ANSI/UL 458 as an American National Standard

(ANSI) occurred on October 15, 2004. The ANSI approval does not include the

Cover Page, the Transmittal Pages, the Title Page, or Appendix A.

This ANSI/UL Standard for Safety, which consists of the Fourth Edition with

revisions through October 15, 2004, is under continuous maintenance, whereby

each revision is ANSI approved upon publication. Comments or proposals for

revisions on any part of the Standard may be submitted to UL at any time. Written

comments are to be sent to the UL-Northbrook Standards Department, 333

Pﬁngsten Road, Northbrook, IL 60062.

An effective date included as a note immediately following certain requirements

is one established by Underwriters Laboratories Inc. and is not part of the ANSI

Standard.

Revisions of this Standard will be made by issuing revised or additional pages

bearing their date of issue. A UL Standard is current only if it incorporates the

most recently adopted revisions, all of which are itemized on the transmittal notice

that accompanies the latest set of revised requirements.

ISBN 1-55989-212-9

ANSI/UL458-2004