Ladder Tray Ladder chalfantobo（梯托盘梯子chalfantobo）.pdf

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2017-08-06 发布于浙江
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Ladder Tray Ladder chalfantobo（梯托盘梯子chalfantobo）.pdf

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Ladder Tray Ladder chalfantobo（梯托盘梯子chalfantobo）

® Ladder Tray r e d d a L When metal ladder cable trays came of • Used in all locations except elevator age, they were used to support the new shafts (the only prohibition on cable armored shielded power cables that were tray use) permitted outside the conduit environ- • Used as an equipment grounding ment. Utilities and industrial companies conductor (classified by UL) initiated the use of expanded metal and solid trough-styled trays for supporting • Less stress on cables during installation power and control cable. and operation • Increased safety, no moisture conden- Cable trays quickly proved their worth as sation problems nor transmission of a safe, dependable and cost-effective