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

2018-12-14View Original

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Meaning of symbols on hydropower drawings (II) Codes for wiring installation methods: PVC – Installed using flame-retardant plastic pipes; DGL – Installed using electrical steel pipes; VXG – Installed using plastic trunking; GXG – Installed using metal trunking; KRG – Installed using flexible plastic pipes. Codes for locations where wires are installed openly: LM – Installed along roof trusses or the lower chords of roof trusses; ZM – Installed along columns; QM – Installed along walls; PL – Installed along ceilings. Codes for locations where wires are installed concealed: LA – Concealed within beams;ZA – Concealed within columns; QA – Concealed within walls; PA – Concealed within roofs or ceilings; DA – Concealed within floors or ground surfaces; PNA – Concealed within ceilings that cannot be accessed

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