UL UL1581 ⑧ Underwriters Laboratories Inc . Standard for Safety Reference Standard for Electrical Wires ,Cables ,and Flexible Cords OCTOBER 5 ,2009 - UL1581 UL Standard for Safety for Electrical Wires ,Cables ,and Flexible Cords ,UL 1581 Fourth Edition .Dated October 31 ,2001 Summary of Topics : This revision to ANSI /UL1581 includes the following change in requirements : Reinstated Burner Calibration Requirements for the Horizontal-Specimen Appliance-Wire Flame Test Text that has been changed any manner or impacted by UL's electronic publishing system is marked with a vertical line in the margin .Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement bees effective . The new and /orrevised requirements are substantially in accordance with Proposal (s)on this subject dated June 26 ,2009 . All rights reserved .No part of this publication may be reproduced ,stored in a retrieval system ,or transmitted in any form by any means ,electronic ,mechanical photocopying ,recording ,or otherwise without prior permission of UL UL provides ...