Where are these cables exactly? Perhaps they aren't exactly parallel cables but special purpose cables using db-25 ends. However, i thought i saw the signal specs for serial nrz-l or nrzi to be ...
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A. Cables or raceways run parallel to framing members or furring strips must be protected by installing the wiring method not less than 1¼ in. from the nearest edge of the framing member or furring ...
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