Wire Bundle Ties

Wire Bundle Ties

1. Ease of installation, maintenance and inspection

2. Cotton, nylon or fibreglass

3. Precautions

   • Tight enough to prevent slipping
     • Not too tight as to cause cuts or deformation
   • No ties on wire bundles located inside conduits
   • Additional wires tied to exterior of bundle with ties at one foot intervals between clamps
   • New wires installed within support clamps and not on the outside of plastic ties
   • Ties required at intervals of 8 inches in normal areas
   • Ties required at intervals of 2 inches in high vibration areas
   • NO ties inside fuel tanks

4. Knots for Wire Bundle Ties

   • Clove hitch and square knot
     • Two counter twisted knots to close
   • Optional Tie
     • Done on ties which tend to slip
     • Prior to making a clove hitch
   • Clove hitch and square knot to secure
     • Two counter twisted knots to close

5. Tying to Protect Wire Bundles

   • Protect against chafing or abrasion by installing additional ties together with sleeving or tape
   • If bundle is tied to a connector single-leg backshell clamp, wire bundle must be wrapped with a minimum of 2 wraps of tape

6. Plastic Wire Ties or Straps

   • Only installed with correct tool
   • Must not be used
     • Bundles with wire larger than 10 AWG
     • Unpressurised areas
     • High vibration areas
     • High temperature areas (higher than 85 degrees celcius)
     • Designated Fly By Wire
     • Aromatic Polyimide (AP) unless wrapped with tape
     • Coaxial cables