• Purpose• Mechanical protection of wires and cables• Grouping and routing wires• Standards• Absence of abrasion at end fittings• Proper clamping• Adequate drain holes free of obstructions• Minimized damage from moving objects• Proper bend radii ConduitsAircraft Electrical Wiring Interconnect System (EWIS)• Conduit Installation Guidelines• Do not locate conduit where service or maintenance personnel might use as handhold or footstep• Provide inspect able drain holes at the lowest point in conduit run — remove drilling burrs carefully• Support conduit to prevent chafing against structure and avoid stressing end fittings• Purpose• Mechanical protection of wires and cables• Grouping and routing wires• Standards• Absence of abrasion at end fittings• Proper clamping• Adequate drain holes free of obstructions• Minimized damage from moving objects• Proper bend radii ConduitsAircraft Electrical Wiring Interconnect System (EWIS)• Conduit Installation Guidelines• Do not locate conduit where service or maintenance personnel might use as handhold or footstep• Provide inspect able drain holes at the lowest point in conduit run — remove drilling burrs carefully• Support conduit to prevent chafing against structure and avoid stressing end fittings