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Layout

Layout

(OP)
Can I know any general Layout of Electric Cabeling in a tunnel... ?? How the supply systems are arranged with the cables in d tunnels?

RE: Layout

As an indication how to segregate the cables and some measure to limit the fire spread see IEEE-525.
There are a lot of publications about how to build a tunnel for cable run. It depends upon type and size of the cables-power
cable, low voltage medium or high voltage, control and instrument cable, telecom or optical fiber and so on.
One of these books could be Switchgear Manual of ABB [ed.11] ch. 13.2 for cable in cable tray ampacity
Siemens "Power Cables and their Application" ch.18.5 for tunnel ventilation
Cable Tray Manual of Cooper B-Line for cable tray installation and power cable ampacity[according to NEC]
NEC art.110 IV

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