Installation Manual

7 Protect against falling objects.
• When objects are thrown down from a height of
6 ft or more, appoint a surveillance person on the
ground and warn others about falling objects.
• D
o not allow third parties to enter the work area
during construction.
• A
rrange tools and materials neatly and secure
them with ropes, or use bags or other measures to
prevent falling objects.
8 O
ther
• When there are electric power lines near the roof
or eaves, request the power utility to take advance
measures to prevent shock.
• C
heck the health of workers before starting work.
• Lift packaged modules by grasping both sides of
the package. Do not lift by grasping the band, as
the band can break.
• N
ever step or sit on the glass surface of a solar
module.
WARNING
Wiring work should be performed
according to the provisions of the National Electrical
Code. Grounding work and wiring connections to
the inverter should be performed by a qualified
electrician.
Adhere to all of the NEC. Pay special attention to
Article 110, Chapter 2 , Article 250, Chapter 3, Articles
300 & 310, 480 & 690.
The solar array generates electricity whenever it is
exposed to sunlight. Be careful when handling it. There is
a danger of shock if you touch the connectors or wires of
the electric cables.
1 Points to check before wiring.
• The solar modules generate electricity when
exposed to light. You will need to wear insulating
gloves.
• Y
ou will need a multimeter for volts, amps,
resistance and continuity capable of measuring
DC and AC up to 600 Volts and 40 Amps.
• Ma
ke sure your tools are insulated.
2 Wiring the solar modules.
• Never step or sit on the glass surface of the solar
modules. The glass may break.
• Wh
en you install the solar modules on the rail, never
allow an output cable to become caught between
the rail and a module frame.
• Th
e solar modules generate electricity when
exposed to sunlight, take care not to short circuit
the output cables. The cables can become
overheated and their cable sheaths can melt.
• En
sure the module connectors are fully inserted.
There is a risk of malfunction if they are not pushed
in all the way.
• Su
pport output cables so that there is no slack.
High winds can blow slack cable against the rail,
damaging the cables.
3 Wi
ring from solar arrays to the inverter (connector
box).
• F
ollow the provisions of the National Electrical
Code. Adhere to all of the NEC. Pay special
attention to Article 110, Chapter 2, Article 250,
Chapter 3, Articles 300 & 310, 480 & 690.
• F
or wiring through walls, protect the cables with
metal conduits, flexible metal conduits, or other
protection. Failure to do so can result in shock
and short circuits. Always use conduit to protect
sections of array output cables that are exposed
to sunlight.
Fo
r wiring outdoors, protect cables with PVC
conduits, metal conduits or flexible conduits.
• P
revent water from entering or building up in
conduit by using waterproof fittings or duct seal.
• T
o prevent shock, tape and label the cut ends of
array output extension cables (the side opposite
to the connector side) before connecting to solar
module output cables. Further, tape them again
after measuring the voltage of each array.
• T
o prevent shock when you connect the array
output cables to the inverter, remove the tape one
cable at a time as you connect the cables.
1.3 PV MODULES
8
1
FOR SAFE INSTALLATION WORK