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NEC standard low voltage cables

Jason Robert Rameshwar

 

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    I am designing a road way lighting cct. 20x250w (urbis)luminaires (each ballast has a max of 3A)@ 230v ac. Is there a standard for underground (via 4" pvc ducts) low voltage cables. (Must be armoured cable) The lamps are spaced 30m apart.

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    I am designing a road way lighting cct. 20x250w (urbis)luminaires (each ballast has a max of 3A)@ 230v ac. Is there a standard for underground (via 4" pvc ducts) low voltage cables. (Must be armoured cable) The lamps are spaced 30m apart.

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