General Installation Manual
© Feb 2012, SANYO Electric Co., Ltd. All Rights Reserved
4
¾
All fasteners (nuts, bolts, washers,
screws, etc.) must be
stainless steel unless otherwise specified.
•
Length of self-tapping screw or bolt should not be more than
0.78’’ (20 mm) in order to avoid contacting the back-sheet of
the module.
•
Acceptable grounding wire is following.
Ilsco Corp. GBL-4DBT 10-14AWG-Solid, 4-6, 8, 10-14AWG-
Strand
Burndy L L C CL501TN 14AWG-Solid, 14-4AWG-Strand
Tyco Electronics Corp. 1954381-1/1954381-2 10-12AWG
Solid
•
Each ledge on the module frame has two smaller holes for
self-tapping screws (0.165’‘diameter (4.2 mm)) and two larger
holes for bolts (0.205’‘diameter (5.2 mm)). These ground
holes are marked with a “G” adjacent to their location on the
frame rail (see Figure 3.1).
•
Ground wires must be connected to the module’s metal
frame at one of these locations.
•
Lay-in lugs or grounding clips can be used to ground Sanyo
HIT modules. Both methods are explained below, please
choose one.
Grounding Locations (or grounding holes)
Using a self tapping screw.
(see Figures 3.2 and 3.4)
•
If using this method, use one of the smaller holes with
diameter of 0.165’‘ (4.2 mm)
•
The self-tapping screw size must be No.10 (0.190’‘diameter
(4.83mm)).
•
This method requires a minimum number of threads-per-inch
to achieve an adequate electrical connection. For a single
screw, the thread pitch must be at least 32 threads per inch
(TPI). A single screw less than 32 TPI does not provide
sufficient thread contact. Note: Self-tapping screws are also
called thread cutting screws.
•
Recommended torque value in tightening self tapping screw is
2.3 N.m (20in-lb).
Using bolt and nut
(see Figures 3.3 and 3.5)
•
If using this method, use one of the larger holes with diameter
of 0.205’‘ (5.2 mm)
¾
The bolt and nut size should be No.8 (0.164’‘diameter (4.16
mm)), or No.10 (0.190’‘diameter (4.83 mm)) or M5
(0.197’‘diameter (5.0 mm)).
•
Star washers must be used to make contact through the
anodization of the module frame.
•
In this case, the screw threads are not providing the electrical
ground contact.
•
Recommended torque value in tightening bolt and nut is 2.3
N.m (20in-lb).
Grounding Methods
Wire connection using cup washers (see Figures 3.2 and
3.3)
•
The use of cup washers is to prevent wire from slipping out
from under the screw head (and/or the flat washer).
•
Make sure that the cup washer is placed between the wire
and the module frame.
•
Choose an adequate size for the cup washer and the flat
washer so that the wire is fully clamped between them.
•
Note: Cup washers are also called terminal cup washers.
•
The cup washers should be stainless steel, or a cup washer
made of brass may be used only if a large flat washer made of
stainless steel is inserted between the module frame and the
cup washer.
•
Choose the adequate size for the large flat washer (between
the module frame and the cup washer) so that the cup washer
doesn’t contact the module frame and is fixed stably to the
module frame.
Method 1-
Use a self tapping screw (see Figures 3.1 and 3.2)
•
If using this method, use one of the smaller holes with
diameter of 0.165’‘ (4.2 mm)
•
The self-tapping screw size must be No.10 (0.190’‘ diameter
(4.83mm)).
•
This method requires a minimum number of threads-per-inch
to achieve an adequate electrical connection. For a single
screw, the thread pitch must be at least 32 threads per inch
(TPI). A single screw less than 32 TPI does not provide
sufficient thread contact. Note: Self-tapping screws are also
called thread cutting screws.
Method 2-
Use a bolt and nut (see Figures 3.1 and 3.3)
•
If using this method, use one of the larger holes with
diameter of 0.205’‘ (5.2 mm)
•
The bolt and nut size should be No.8 (0.164’‘ diameter
(4.16 mm)), or No.10 (0.190’‘ diameter (4.83 mm)) or
M5 (0.197’‘ diameter (5.0 mm)).
•
Star washers must be used to make contact through the
anodization of the module for this method.
•
In this case, the screw threads are not providing the electrical
ground contact.
Using lay-in lug with self tapping screw
•
If using this method, please follow instructions in previous
section regarding using self tapping screws.
•
Use a grounding tin plated solid copper lay-in lug rated for
direct burial and outdoor use. Lug must be used
ILSCO
GBL-4DBT, Burndy CL501TN.
•
The self-tapping screw size must be No.10 (0.190’‘ diameter
(4.83mm)).
•
This method requires a minimum number of threads-per-inch
to achieve an adequate electrical connection. For self-tapping
screws, the thread pitch must be at least 32 threads per inch
(TPI). A single screw less than 32 TPI does not provide
sufficient thread contact. Note: Self-tapping screws are also
called thread cutting screws.
•
As shown in figure 3.4, attach grounding lug to module frame
using a stainless steel self tapping screw.
•
Insert a stainless steel star washer between the module
frame and the lug to penetrate frame anodization.
•
Tighten stainless steel set screw at the torque specified by
lug manufacturer to secure copper wire.
The specified torque is following
Ilsco
Corp.
GBL-4DBT
10-14AWG-Solid -> 20 in-lbs,
4-6AWG-Strand -> 35 in-lbs, 8AWG-Strand -> 25 in-lbs, 10-
14AWG-Strand -> 20 in-lbs
Burndy L L C CL501TN
14AWG-Solid -> 35 in-lbs,
14AWG-Strand -> 35 in-lbs, 4AWG-Strand -> 45 in-lbs
•
Recommended torque value in tightening self tapping screw
is 2.3 N.m (20in-lb).
Using a lay-in lug with bolt and nut
