Standards & Publications

Browse & Buy UL Standards
Standard 1573, Edition 4

Standard for Stage and Studio Luminaires and Connector Strips

UL Bulletin
Standard 1573, Edition 4 Edition Date: October 01, 2004 $203.00-$254.00
Summary of Topics b1573_4_20041001_sum.html

Subject 1573

Bulletin Dated: October 1, 2004


1. This bulletin addresses and resolves the comments received in response to UL's Subject 1573 proposal bulletin dated March 29, 2004, proposing revisions to the Fourth Edition of the Standard for Stage and Studio Luminaires and Connector Strips, UL 1573. The proposals have been revised to address the following areas (refer to Appendix A for full details):

• Leakage Current Test - UL proposes that power supply cord-connected UL 1573 products be required to comply with a leakage current test.
• Leakage Current Limits - UL proposes that leakage current limits of (a) 4.0 MIU apply to power supply cord-connected products that meet certain criteria; and (b) 0.5 MIU for all other power supply cord-connected products.
• New Glossary Entries - UL proposes several new Glossary definitions, including Fixed Equipment, Portable Equipment, and Stationary Equipment, to assist in understanding the application of the new and revised requirements.
• Power Supply Cord-Connected Connector Strip - UL proposes new paragraph 29A.2.9 to indicate that all circuits within the connector strip need to be energized during the conduct of the leakage current test and, where applicable, the location(s) for the leakage current warning marking proposed in Figure 60A.1.
• Product Use Categorization - UL proposes new paragraphs 2.5.1 - 2.5.3 to specify that a product needs to comply with the requirements for all applicable product-use categorizations (fixed, portable, stationary) where the manufacturer intends the installer to choose how the product is used.
• Leakage Current Measurement Circuits - UL proposes new figures showing the leakage current measurement circuits in a manner that is more readily applied to a wider number of products.
• Revised Criteria for Components Exempt from the Leakage Current Test - UL has revised proposed Section 29A extensively to provide more generic criteria for components exempt from the leakage current test.
• Appliance Wiring Material - UL proposes the use of certain appliance wiring material that meets appropriate insulation requirements which will exempt a product from being subjected to the leakage current test.
• Leakage Current for DC Products - UL has revised the proposals to address products intended for use on DC supply circuits.
• Permanence of Cord Tags - UL proposes to revise paragraph 53.4 to require all cord tags, including the new leakage current warning marking, to comply with the permanence of cord tag requirements in the Standard for Cord Sets and Power-Supply Cords, UL 817.

2. In response to comments received about the leakage current test proposals in UL's Subject 1573 bulletin dated March 29, 2004, this bulletin provides additional Rationale information for the proposed requirements.

3. This bulletin also requests your comments on the proposed 36-month effective date for the revised Leakage Current Test proposals in Appendix A.


Back to Standard 1573, Edition 4

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign


Additional information required

To serve you better, please update your account details.

Featured Standards

Recently Published


Coming Soon

UL 1008M
Transfer Switch Equipment, Meter-Mounted
First Edition

UL 1660
Liquid-Tight Flexible Nonmetallic Conduit
Revision Pages

UL 4200A
UL Standard for Safety for Products Incorporating Button or Coin Cell Batteries of Lithium Technologies
Revision Pages

ULC 704.1
Thermal Insulation, Polyurethane and Polyisocyanurate, Boards, Faced
Revision Pages

UL 746S
Evaluation of Sustainable Polymeric Materials for use in Electrical Equipment
First Edition

UL 2034
Single and Multiple Station Carbon Monoxide Alarms
New Edition

UL/ULC 2271
Batteries for Use In Light Electric Vehicle (LEV) Applications
New Edition

UL/ULC 2447
Standard for Safety for Containment Sumps, Fittings and Accessories for Flammable & Combustible Liquids
First Edition

UL 62817
Photovoltaic Systems – Design Qualification of Solar Trackers
First Edition