www.etsolar.com
Subject to technical modifications without notice. 2016 © ET Solar Group
www.etsolar.com
Subject to technical modifications without notice. 2016 © ET Solar Group
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There are other options in addition to using a wiring type junction box only consisting of
two terminals marked with "+" and "-" to represent the positive and negative terminals of
the power supply. Some junction boxes include three or more terminals. Only those
terminals indicated with "+" and "-" should be connected to the load. The others are
designed for the bypass diodes to reduce the damage to modules caused by hot spots
and 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 provides is 1 x 4.0mm².
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.
The modules will generate electrical energy under sunlight and otherlight sources.
Refer to Section 690-8 of the National Electrical Code for an additional multiplying factor
of 125 percent (80 percent derating) which may be applicable.
ET Solar modules are designed to use copper wire only. The Wiring used is UL listed,
rated 1000 V/600V, temperature rating 90 ° C ,wet or dry, Sunlight Resistant, 12 AWG, Type
PV Wire.
The installation in Canada shall be in accordance with CSA C22.1, Safety standard for
electrical installations,Canadian Electrical Code, Part 1.
WARNING!
Wiring must only be completed by a qualified engineer with suitabletools.
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 conditions (irradiance of 100 mW/cm², AM1.5 spectrum, and a cell temperature of
25°C (77°F)).
Under normal conditions, a photovoltaic module is likely to experience conditions that
produce more current and/or voltage than reported at standard test conditions.
Accordingly, the values of Isc and Voc marked on this module should be multiplied by a
factor of 1.25 when determining component voltage ratings, conductor capacities, fuse
sizes, and size of controls connected to the PV output. If modules are to be installed in
parallel (electrically), each module (or series string of modules so connected) shall be
provided with the maximum series fuse as specified.
3.4 Output Voltage, Current and Maximum Power
WARNING!
In order to avoid electric shock and scalding, it is necessary to cover the surface of the
module with a suitable material to prevent incidental light contacting the modules
during the connection process.
