ULA
PLANNING AND
ASSEMBLY
INSTALLATION MANUAL
INSTALLATION GUIDE
PAGE
9
GROUNDING LUG MOUNTING DETAILS:
Details are provided for both the WEEB and Ilsco products. The WEEBLug has a
grounding symbol located on the lug assembly. The Ilsco lug has a green colored
set screw for grounding indication purposes. Installation must be in accordance
with NFPA NEC 70, however the electrical designer of record should refer to the
latest revision of NEC for actual grounding conductor cable size.
WEEBLUG CONDUCTOR - UNIRAC P/N 008002S:
Apply Anti Seize and insert a bolt in the aluminum rail and through the clearance h
ole
in the stainless steel fl at washer. Place the stainless steel fl at washer on the bolt,
oriented so the dimples will contact the aluminum rail. Place the lug portion on the
bolt and stainless steel fl at washer. Install stainless steel fl at washer, lock washer and
nut. Tighten the nut until the dimples are completely embedded into the rail and lug.
TORQUE VALUE 10 ft lbs.
See product data sheet for more details, Model No. WEEB-LUG-6.7
ILSCO LAY-IN LUG CONDUCTOR - UNIRAC P/N 008009P:
Alt
ernate Grounding Lug
- Drill, deburr hole and bolt thru both rail walls per table.
TORQUE VALUE 5 ft lbs.
See ILSCO product data sheet for more details, Model No. GBL-4DBT.
NOTE: ISOLATE COPPER FROM ALUMINUM CONTACT TO PREVENT CORROSION
GROUNDING LUG - BOLT SIZE & DRILL SIZE
GROUND LUG
BOLT SIZE
DRILL SIZE
WEEBLug
1/4"
N/A - Place in Top SM Rail Slot
IlSCO Lug
#10-32
7/32"
•
Torque value depends on conductor size.
•
See product data sheet for torque value.
STANDARD SYSTEM GROUNDING
ONLY ONE LUG PER ARRAY:
Only one lug per array is required.
TERMINAL TORQUE,
Install Conductor and
torque to the following:
4-6 AWG: 35in-lbs
8 AWG: 25 in-lbs
10-14 AWG: 20 in-lbs
Star Washer is
Single Use Only
WEEBLUG
Single Use Only
TERMINAL TORQUE,
Install Conductor and
torque to the following:
6-14 AWG: 5ft-lbs
