Electrical Installation Safety; Connection Of Modules - Q CELLS Q.PEAK DUO XL-G11S /BFG Series Installation And Operation Manual

4 Electrical Connection

4.2 Electrical installation safety

Danger! Risk of fatal injury due to electric shock!
Electrical work may only be performed by qualified
and skilled personnel (see page 3).
Ensure correct polarity.
Danger! Risk of fatal injury due to electric shock!
Be sure to maintain the time intervals as specified by
the inverter manufacturer between switching o the
inverter and beginning any further work.
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INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11S.X / BFG
Danger! Risk of fatal injury due to electric shock!
Never plug or unplug the cable when under load.
Modules must not carry any current.
1. Switch o the inverter.
EN
OFF
2. Switch o the DC circuit breaker.
3. Measure shutdown in DC String.
(no DC current flow).
4. Disconnect plugs by the use of appropriate
and qualified tools of the manufacturer.
5. When connecting the modules proceed in reverse
order.
4 Electrical Connection

4.3 Connection of modules

Use solar cables for the connection at the junction
box outlet.
Only interconnect connectors of the same type and
manufacturer.
According to Staubli, MC4 and MC4-Evo2 connectors
are fully compatible with one another. Qcells accord-
ingly does not object interconnecting these particular
connector types.
Use minimum No. 12 AWG copper wires insulated for
a minimum of 90 °C for field connections.
SOLAR
Danger! Risk of fatal injury due to electric shock!
Ensure that all electrical components are in a proper,
dry, and safe condition.
Ensure for a tight connection between the plugs.
Plugs click together audibly.
click
INSTALLATION AND OPERATION MANUAL SOLAR MODULES Q.PEAK DUO XL-G11S.X / BFG
Note! Module damage may occur!
Ensure that the cabling is not under mechanical stress
(Comply with bending radius of ≥ 2.36 in (60 mm)).
Ensure that the cables do not run between module
and mounting rail or structure (danger of pinch).
Position the wiring on the solar modules that addi-
tional shading is avoided.
Do not connect modules with di erent orientations or
angles of inclination in the same string.
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