Electrical Installation; Grid-Connected Electrical System; Installation Conditions - GH Solar GHxxxP-36 Series Installation Manual

4. Electrical Installation

4.1.Grid-connected electrical system:

The DC electrical energy generated by photovoltaic systems may also be converted to AC
and connected to a utility grid system. As local utilities' policies on connecting renewable
energy systems to their grids vary from region to region. Consult a qualified system
designer or integrator to design such a system. Permits are normally required for installing
such a system and the utility must formally approve and inspect such a system before it
can be accepted.

4.2.Installation conditions:

Typically electrical work for PV systems requires building permits. The installer is
responsible to understand the permits and codes that must be obeyed for electrical hook
up. The PV Module has a pair of male and female waterproof connectors. For a series
electrical connection, connect positive (+) connector of first PV Module to negative (-)
connector of the following Module.
Do not short the positive and the negative. Do not disconnect under load.
Be sure connectors have no gap between the insulators. In case there is a gap, a fire
and/or an electrical shock may occur.
The installer must size the array wiring so that maximum voltage drop from the module to
the inverter is less than 2%.
Do not use modules of different configurations in the same system.
Several modules are connected in series and then in parallel to form a PV array,
especially for application with a high operation voltage. If modules are connected in series,
the total voltage is equal to the sum of individual voltages.
All modules must have the same amperage in order to have optimal power output.
For applications requiring high currents, several photovoltaic modules can be connected
in parallel; the total current is equal to the sum of individual currents.
Consult your qualified installers for proper connection with array junction box.
Module is supplied with connectors to use for system electrical connections.
Consult rated local wiring regulations to determine system wire size, type, and
temperature.
For field connections, use minimum 12 AWG copper wires insulated for a minimum of
90 °C.
The junction box has a breather port. The breather port must be mounted facing down and
cannot be exposed to rain. Therefore, the junction box must be on the higher side of the
module when it is mounted.