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This is a preview - click here to buy the full publication IEC - - Edition - REDLINE VERSION GROUP SAFETY PUBLICATION colour inside Tests on electric and optical ?bre cables under ?re conditions ?? Part - Test for vertical ame spread of vertically-mounted bunched wires or cables ?? Category C INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS ISBN - - - - Warning Make sure that you obtained this publication from an authorized distributor Registered trademark of the International Electrotechnical Commission CThis is a preview - click here to buy the full publication F D IEC - - ISH IEC ?? ?? INTERNATIONAL ELECTROTECHNICAL COMMISSION IEC - - Edition - TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS ?? Part - Test for vertical ame spread of vertically- mounted bunched wires or cables ?? Category C INTERPRETATION SHEET This interpretation sheet has been prepared by IEC technical committee Electric cables The text of this interpretation sheet is based on the following documents DISH DISH Report on voting RVDISH Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indicated in the above table The request to clarify the retest procedure was considered by TC WG and a common view from the experts has been communicated The selection of the two retest samples should be agreed between manufacturer and testing certi ?cation body The retest samples shall be of exactly the same construction same number of cores same conductor cross section same design as of the ?rst test sample that failed The retest samples should be taken from the same cable length as of the ?rst test sample but WG ?nds it acceptable that in case su ?cient length is not available anymore the retest samples are taken from another production length order of the same construction In case the cable design is changed it is no longer considered a retest sample but a di ?erent new test sample IEC - - - ISH - en ICS CThis is a preview - click here to buy the full publication ?? ?? IEC - - RLV ? IEC CONTENTS FOREWORD INTRODUCTION Scope Normative references Terms and de ?nitions Test apparatus General Ignition source Test procedure Test sample Determination of the number of test pieces Mounting of the test sample Cables having at least one conductor above mm Cables having conductors mm and below and optical cables Flame application time Evaluation of test results Performance requirements Retest procedure Test report Annex A normative Guidance on cable selection for type approval testing Annex B informative Recommended performance requirements Bibliography Figure ?? Spaced cables mounted on the front side of the standard ladder Figure ?? Touching cables mounted on the front side of the standard ladder arrays of cables in contact Table A ?? Summary of test conditions CThis is a preview - click here to buy the full publication IEC - - RLV ? IEC ?? ?? INTERNATIONAL ELECTROTECHNICAL COMMISSION TESTS ON ELECTRIC AND