Installation Manual
JB-2 Installation Manual
PV Junction Box for Tile Roofs
A. Step-by-Step Instructions
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1 2
Determine location for JB-2 on
the roof surface. Loosen tiles in
the row above desired location.
Remove the roof tile(s) where
the JB-2 will be located.
Optional Sub Flashing
Properly flash using preferred
method
NOTE: Not included in Kit
Ordered Separately
3
Insert aluminum flashing with the
top edge underneath the row of
tiles above, center pentagon
flashing in opening.
For S-Tile types, set pentagon
opening to the right of vertical
center 1/2”. Creating more clear
space in the valley for water flow.
4
Pressing firmly with both hands,
bend the flashing to form to the
contour of the roof tiles.
9 10
Secure the JB-2 to the roof
decking using (5) #10 x 1-1/4”
Phillips pan head screws
(provided).
Install outdoor-rated, UL 514B,
NEMA 3R approved fittings and/or
strain reliefs to the EAST, WEST
and SOUTH side walls of JB-2
and complete wiring installation.
Up to 1” raintight fittings are all
acceptable. Clean off all burs.
Optional: Attach din rail as needed.
NOTE: You will need 6” or longer
Drill Bit Extender
11
Use a pair of tin snips to snip
the bottom edge of flashing on
each side (min 1” wide) creating
a tab. Tuck tabs under adjacent
tiles to help keep the replace-
ment flashing flush to the roof.
Populate the JB-2 using the
appropriate wire connectors,
terminal blocks, or other
needed components that are
suitable for the intended
purpose.
CAUTION: BONDING BETWEEN
CONDUIT CONNECTIONS IS
NOT AUTOMATIC AND MUST BE
PROVIDED AS PART OF THE
INSTALLATION
12
When connections are
complete, finish by installing the
lid using (5) #8 x 3/4” Phillips
pan head screws (provided).
Tighten until screw head fits
snug on lid.
5 6
Place the JB-2 base into the
opening in the flashing. Using a
drill bit, drill through the box &
roof simultaneously within the
approved ‘Drill Zone’. Verify
penetration hole(s) are on either
side of a rafter but not over or
through a rafter/truss.
Remove the JB-2 and drill
appropriately sized holes in the
box and decking for required
conductor fittings. Clean off all
burs. Install fittings.
NOTE: You will need 6” or longer
Drill Bit Extender
7
Apply a generous bead of
sealant to flashing sidewalls.
8
Apply sealant to the underside
of the JB-2.
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2 3
4
5
optional