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SG-60 High Intensity Strobe System 2-16 Manual EPM-00000019 Rev A
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)