• Use ladders with steps broad enough to permit safe work.
5 When working in high places, wear harnesses and use scaffolding.
• When working at heights of 6 ft or more, use scaffolds or other equipment to
ensure a stable work platform.
• Scaffolds should be designed and erected by a qualified person.
• When it is difficult to erect a stable work platform, install safety nets, wear
harnesses, and take other measures to prevent falls.
• Regulations mandate the use of harnesses. Fasten harnesses securely, and check
that the length of lifelines is 6 ft or less.
• Attach the primary support line securely to a metal fixture installed for that
purpose on a ridge or beam.
6 Install enclosures and covers.
• Install enclosures, guardrails, or covers at the end of work decks that are 10 ft or
more above ground, at openings, and at other dangerous locations.
• When it is extremely difficult to install enclosures, guardrails, or covers, or when
they must be removed to work in that location, install a safety net, wear harnesses,
and take other measures to prevent falls.
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.
• Do not allow third parties to enter the work area during construction.
• Arrange tools and materials neatly and secure them with ropes, or use bags or
other measures to prevent falling objects.
8 Other
• When there are electric power lines near the roof or eaves, request the power
utility to take advance measures to prevent shock.
• Check 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.
• Never step or sit on the glass surface of a solar module.
1.3 PV MODULES
Warning
Wiring work should be performed according to the provisions of the National
Electrical Code
（
NEC
）
. Grounding work and wiring connections to the inverter should
be performed by a qualified electrician.
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.
