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Appendix D Wiring Communications
D.3.1 Wiring Precautions
Above-ground structure (steel frame)
(a) Above-ground Structure
Fig. D.11 Laying Cables between Buildings
Communications
cable
Low-voltage control circuit
General control circuit
Main circuit
Ground
60 cm min.
Trough
Communications
cable
(c) Burying in the Ground
D-18
Communications cable
(b) Under-ground Pit or Tunnel
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