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Electricity on PV Panels
PV modules can produce current and voltage when exposed to light of any intensity. Electrical current
increases with higher light intensity. DC voltage of 30 Volts or higher is potentially lethal. Contacting
the live circuitry of a PV system operating under light can result in lethal electric shock. De-energize PV
modules by removing them entirely from light or by covering their front surface with an opaque material.
Regard the safety regulations for live electrical equipment when working with modules that are exposed
to any light. Use insulated tools and do not wear metallic jewellery while working with PV modules.
In order to avoid arcing and electrical shock, do not disconnect electrical connections under load. Faulty
connections can also result in arcing and electrical shock. Keep connectors dry and clean, and ensure that
they are in proper working condition. Never insert metallic objects into the connectors, or modify them in
any way in order to secure an electrical connection.
Do not touch or handle PV modules with broken glass, separated frames or a damaged backsheet unless
the PV modules are first disconnected and you are wearing proper Protective clothing. Avoid handling PV
modules when they are wet. Never touch electrical connections that are wet without protecting yourself
with insulated gloves.
Make sure the fuses on the MPPT are in the off position when making any connections
Mounting of PV Panels
Rooftop PV systems should only be installed on dwellings that have been formally analysed for structural
integrity, and confirmed to be capable of handling the additional weighted load of PV system components,
including PV modules, by a certified building specialist or engineer.
For your safety, do not attempt to work on a rooftop until safety precautions have been identified and
taken, including without limitation fall protection measures, ladders or stairways, and personal protective
equipment.
For your safety, do not install or handle PV modules under adverse conditions, including without limitation
strong or gusty winds, and wet or frosted roof surfaces.
PV System Installers Guide
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Safety precautions
