7
to ensure undisrupted electrical energy output from the array. The hex nut in the exit
position on the junction box is used to hold a rubber ring to seal the box.
When disconnecting the connectors of a photovoltaic module in a module array that is
exposed to sunlight, electric arcs may result. Such arcs may cause burns and fires.
Therefore, PV system commissioning and maintenance must be performed by a qualified
electrician in accordance with the NEC. Before disconnecting a module in a solar array,
disconnect the string of module from the DC Disconnect at the inverter side, and then
fully cover the module with an opaque material.
Do not short the positive and the
negative connectors of a module exposed to sunlight.
The specification of wire for the electric coupler that ET Solar provided is 1 x 4.0mm
2
.
Equivalent wire should be used if the user prefers to use his own wire. When the
module’s rated current is lower, 12AWG wire is recommended for use, and the strength
of the wire should be taken into consideration. ET Solar does not provide any output
wiring for module installation.
ET Solar modules are designed to use copper wire only. The working temperature of wire
and J-box is –40
℃
- 90
℃
. The wiring box interior is not intended for field access, and no
serviceable parts are inside.
The installation in Canada shall be in accordance with CSA C22.1, Safety standard for
electrical installations, Canadian Electrical Code, Part 1.
3.3 Output Voltage, Current and Maximum Power
The open-circuit voltage (Voc), short-circuit current (Isc) and maximal power (Pmax) are
printed on the PET label on the backside of the module. The electrical characteristics are
within ±10 percent of the indicated values of Isc, Voc and Pmax under standard test
WARNING!
Wiring must only be completed by a qualified engineer with
suitable tools.
