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J.Install mctal channcl racks for mounting cabinets, panclboards, disconncct <br /> switches, control enclosures, pull and junction boxes, transformers, and other <br /> dc��ices unlcss components are mounted direcUy to structural clements of <br /> adequate strength. <br /> K. Install sleevcs for cable and raceway penctrations of concrete slabs and walls <br /> unless core-drilled holes are used. Install sleeves for cable and raceway <br /> penetrntions of masonry and fire-rated gypsum walls and of all other firc-ratcd <br /> Ooor and wall assemblies. Install slceves during erection of concrete and <br /> masonry���alls. <br /> L. Securely fasten clectrical itcins and their supports to lhe building structure, <br /> unicss otlicnvisc indicated. Perfomi fastenmg according to the follo�ving <br /> unless othcr fastcning methods arc indicatcd: <br /> 1. Wood: Fasten with wood screws or scre�wtypc nails. <br /> 2. Masonry: Toggle bolts on hollow masonry units and expansion bolts <br /> on solid masonry units. <br /> 3. Existing Concretc: Expansion bolts. <br /> 3.8 - !J�ENTIFICATION MATERIALS AND D�VICES <br /> A. install at locations for most convenient viewing without interfercnce with <br /> operation and maintenance of equipment. <br /> II. Coordinate names, abbreviations, colors, and other dcsignations used for <br /> cleclrical identifcation with corresponding designations indicated in thc <br /> Contract Documents or required by codes and standards. Use consistent <br /> designations throughout Pro�ect. <br /> C. Scif-Adhesive Idcntification Products: Clean surfaces before applying. <br /> D. Identify raceways and cables�vith color banding as Collows: <br /> 1. Bands: Prctensioned, snap-around, cu?ored plastic slecves or colorcd <br /> adhesive marking tape. Makc each color Uand 3 inches (�1 mm) wide, <br /> completcly encircling conduit, and place adjaccnt bands of two-color <br /> markings in contact, side by side. <br /> 2. Band Locations: At changes in direction, at penelrations of walls and <br /> 1loors, at 50-foot (15-m) maximum intcrvals in straight runs, and at <br /> 25-I'oot (8-m) maximum intcrvals in congestcd areas. <br /> E. Tag and label circuits designated to bc extendcd in the future. IdentiCy sourcc <br /> and circuit numbers in each cabinet, pull and junclion box, and outlet box. <br /> Colorvcading may be used for voltage and pliase identification. <br /> P. Install continuous undcrground plastic markcrs during trench backfilling, ior <br /> exterior underground power, control, signal, and communication lines located <br /> dircctly above power and commm�ication lines. Locate 6 to S inches (1�0 to <br /> 200 mm) below finished grade. If �vidlh of multiplc lines inslalled in a <br /> common trench or concrete envelope does not exceed IG inches (400 mm), <br /> overall, use a single linc marker. <br /> G condii tors t�gougl ou thc sccondary Icctric.11 syslcmcas follod branch-circuit <br /> � <br />