Product Specification Mechanical Connector
User Manual: Mechanical Connector Specification Technical Resources – ILSCO
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Product Specification
Mechanical Connector System
1 | P a g e
1 Scope
This specification establishes the materials, design,
marking, installation, inspection, and performance
requirements of ILSCO’s mechanical connector system.
Product families included within the mechanical wiring
system are solderless lugs, splices, taps, clamps, lay-in
connectors, split bolts, and neutral bars made from
aluminum, copper, zinc, or bronze.
2 Materials
2.1 All mechanical connections shall use ILSCO’s
mechanical wiring connectors.
2.2 Connectors manufactured from aluminum shall be
in compliance with ASTM B108 or B221.
2.3 Connectors manufactured from copper shall be in
compliance with ASTM B124, B152, or B301.
2.4 Connectors manufactured from bronze shall be in
compliance with ASTM B62, B98, or B505.
2.5 Connectors manufactured from zinc shall be in
compliance with ASTM B86.
2.6 Aluminum connectors shall be plated with electro-
tin plating in compliance with ASTM B545 and
B571.
2.7 Copper and bronze connector designs requiring
protective plating shall be plated with electro-tin
plating in compliance with ASTM B-545 and B571
or bright dipped.
2.8 Wire binding screws shall be made with
aluminum, steel, silicon bronze or brass.
2.9 Connectors shall be RoHS compliant.
3 Design
3.1 Connectors shall be capable of terminating
conductors sized from 14 AWG to 1000 kcmil.
3.2 Aluminum connectors shall be dual rated for both
copper and aluminum conductors at a minimum
of 75-deg C.
3.3 Copper and bronze connectors shall be rated for
copper conductors at 90-deg C.
3.4 Connectors shall be range taking; accepting
various conductor sizes.
3.5 Connectors shall suitable for use in circuits rated
up to 35kV when installed using proper high
voltage spacing and insulation techniques.
3.6 Wire-way holes shall be sized for easy insertion of
all class B/C conductors designed for the
connector.
3.7 All wire binding screws shall be designed to
withstand 110% of the recommended installation
torque.
4 Marking
4.1 All connectors shall be clearly marked with the
following information:
4.1.1 ILSCO or ILSCO’s inspection symbol,
4.1.2 Catalog number
4.1.3 Conductor sizes accommodated
4.1.4 Conductor types approved for use
4.1.5 Maximum operating temperature
4.1.6 Certification marking:
UL Listing mark, and
CSA Certification mark
5 Installation
5.1 Installation of connectors shall be made in
accordance with information sheets provided with
the connectors and available at www.ilsco.com.
5.2 Information sheets shall contain the required UL
and CSA approved torque values.
5.3 Connectors shall be capable of installation during
all types of weather events, humidity levels, and
field conditions using standard industry tools and
without special safety precautions or procedures.
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Product Specification
Mechanical Connector System
2 | P a g e
6 Inspection
6.1 Connector marking information shall be legible for
inspection.
6.2 All connectors with blind wire-way holes shall
indicate the strip length of the conductor
insulation that shall be removed prior to
installation.
6.3 All connectors, except those in 6.2, shall allow for
post-installation verification of acceptable
conductor insertion.
7 Performance
7.1 Connectors used for power applications shall be
Listed by Underwriters Laboratories (UL) per UL
486A-486B Standard for Wire Connectors.
7.2 Connectors used for power applications shall be
Certified by either Canadian Standards Association
(CSA) or UL per CSA C22.2 No. 65.
7.3 Connectors used for grounding applications shall
be Listed by Underwriters Laboratories (UL) per
ANSI/UL 467 Standard for Grounding and Bonding
Equipment.
7.4 Connectors used for grounding applications shall
be Certified by Canadian Standards Association
(CSA) per CSA C22.2 No. 41 Bonding and
Grounding of Electrical Equipment.
7.5 Connectors made from aluminum shall be UL
Listed, per 7.1 and 7.3, and CSA Certified, per 7.2
and 7.4, with solid copper and aluminum
conductors and stranded class B/C copper and
aluminum conductors.
7.6 Connectors made from copper or bronze shall be
UL Listed, per 7.1 and 7.3, and CSA Certified, per
7.2 and 7.4, with solid copper conductors and
stranded class B/C copper conductors.