operational code for electrical installations

operational code for electrical installations
2) Сахалин Ю: правила устройства электроустановок потребителей, правила эксплуатации электроустановок

Универсальный англо-русский словарь. . 2011.

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  • Electrical conduit — risers, seen inside fire resistance rated shaft, as seen entering bottom of a firestop. The firestop is made of firestop mortar on top, rockwool on the bottom. Raceways are used to protect cables from damage …   Wikipedia

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