Airport Systems

the junction box ports. Do not begin to run wire through a junction box port before a chase nipple or grommet is in place.

5.Before running the wire into a box insure the wire insulation will be protected from any sharp edges on the junction boxes. Pieces of carpet, wide copper braid, etc. can be fastened in place over sharp edges to protect wire insulation.

6.Precut and bundle method of wire installation:

(a)Cut all conductors to length for their respective run with adequate excess to allow for strain relief and additional slack for connections.

(b)Ensure that there is plenty of wire pulling lubricant on site before beginning to pull wiring. Use plenty of lubricant as the wire is being run through the conduit.

(c)The wiring bundle should be hoisted above the junction box at the top of the run into which it is to be inserted then lowered down into the conduit. There should be someone at the top junction box of the run to insure the wiring does not get scuffed or cut on junction box edges and to apply lubricant to the wiring as it enters the conduit.

(d)If the conduit and wire will be installed on the ground, use the same methods described here. Insure proper amount of lubricant is available and that the wire is shielded from any rough edges on the conduit or ground that might damage the wire/cable insulation.

(e)Adequate slack should be pulled back up into the uppermost junction box to effect strain relief and to make proper wiring connections. Once wiring bundle is supported by the strain relief mechanism, make all wiring connections in the junction box.

i.To make proper connections the wiring entering the box from above and the wiring above, the strain relief mechanism at the bottom of the box must be long enough. The wires at the top of the box should be formed into a “J” shape and the last 1/2-inch of insulation should be stripped off the conductor. The wires from the bottom of the box supported by the strain relief mechanism should be run up to a point just short of the top of the junction box and cut off. The last 1/2-inch of insulation should then be stripped from those. Wire connections should be made with proper sized Scotch® Twist wire nuts or split bolt connectors.

ii.Once a wire nut is installed, hold the wire nut and tug on all wires firmly to ensure the connection of all conductors is tight.

iii.Finish each connection with at least 6 wraps of Scotch 33+ tape or equivalent for proper moisture protection.

iv.When a proper connection is complete, the wire nut should be positioned upside-down (wire nut opening pointing downward)

SG-60 High Intensity Strobe System

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Manual EPM-00000019 Rev A