throughout. These cables are connected to powerful pumps that pump the oil
through them while in operation. Safety switches turn off the oil flow in
the event of a leak, in order to limit the effects of a hydrocarbon
fire.]] in Sweden, showing rapid fire spread through burning of cable
jackets from one cable tray to another.]]A cable is one or more wires or
optical fibers bound together, typically in a common protective jacket or
sheath. The individual wires or fibers inside the jacket may be covered or
insulated. Combination cables may contain both electrical wires and optical
fibers. Electrical wire is usually copper because of its excellent
conductivity, but aluminum is sometimes used because it costs less.
Construction Electrical cables may be made flexible by stranding the
wires. In this process, smaller individual wires are twisted or braided
together to produce larger wires that are more flexible than solid wires
of similar size.
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Cable,
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