Engineering Tips ------- The Meaning of Symbols on Hydropower Drawings (V)

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Meaning of Symbols on Hydropower Drawings (V): Indications of Lighting Fixture Installation Methods CS – Chain suspension DS – Pipe suspension W – Wall-mounted C – Ceiling-mounted R – Embedded S – Bracketed CL – Column-mounted SR – Along steel trunking BE – Along or across roof trusses CLE – Along or across columns SC – Through welded steel pipes MT – Through electrical conduits PC – Through rigid plastic pipes FPC – Through flame-retardant semi-rigid PVC pipes CT – Through cable trays MR – Through metal trunking PR – Through plastic trunking M – Via steel cables KPC – Through PVC corrugated electrical conduits CP – Through flexible metal hoses DB – Direct burial TC – In cable trenches Designation of Conductor Installation Locations AB – Along or across beams (roof trusses) BC – Hidden within beams AC – Along or across columns CLC – Hidden within columns WS – Along wall surfaces WC – Hidden within walls CE – Along ceiling or roof surfaces CC – Hidden within roofs or ceilings SCE – Installed within ceilings FC – Under floors or ground surfaces