16050-12
BASIC MATERIALS AND METHODS
as manufactured by 3M Co. (pre- insulated "Scotch-Lock") or Ideal ("Wing-
Nuts").
3. For splices and taps, No. 8 and larger, use solderless "Split Bolt" type connector
as manufactured by Anderson, Burndy, Kearney, Thomas & Betts, or
equivalent.
4. Use cast connections, Cadweld or Thermoweld, for ground conductors.
5. Make all splices and connections in accessible boxes and cabinets only.
6. Cover uninsulated splices, joints and free ends of conductor with rubber and
friction tape or PVC electrical tape. Plastic insulating caps may serve as
insulation.
7. Where feeder conductors pass through junction and pull boxes, bind and lace
conductors of each feeder together. For parallel sets of conductors, match
lengths of conductors as near equal as possible.
8. Branch circuit conductors installed in panelboards, and control conductors
installed in control cabinets and panels shall be neatly bound together using
"Ty-Raps" or equivalent.
9. Underground Splicing
a. This work will require that all splices be tested and also provide the splices
with a compression connector on the conductor. Insulate and waterproof
using one of the following methods which are suitable for continuous
submersion in water:
b. Provide cast-type splice insulation by means of molded casting process
employing a thermosetting epoxy resin insulation in a packaged form ready
for convenient mixing without removing from the package.
c. Gravity poured method shall employ materials and equipment contained in
an approved commercial splicing kit which includes a mold suitable for the
cables to be spliced when the mold is in place around the joined conductors,
prepare the resin mix and pour into the mold.
d. Provide heavywalled heat shrinkable splice insulation by means of a
thermoplastic adhesive sealant material which shall be applied by a clean
burning propane gas torch.
e. Provide a cold-shrink rubber splice which consists of EPDM rubber tube
which has been factory stretched onto a spiraled core which is removed
during splice installation. The installation shall not require heat or flame, or
any additional materials such as coverings or adhesives. It shall be designed
to be used with in-line compression type connectors, indoor, outdoor,
direct-burial or submerged locations.
O. Installation of Ceiling Hung Devices
1. Lighting fixtures, detectors, etc., in Mechanical Equipment, Boiler and Pump
Rooms shall be installed with exposed conduit after equipment, ductwork,
piping, etc., are in place.
P. Grouping of Conductors
1. Contractor may group certain wiring with the approval of the Engineer, as
follows.
a. Power 120V may be grouped with power 120V
b. Control 120V may be grouped with control 120V
c. Control 24V may be grouped with control 24V
13089K
