Samlex America SSP-150-KIT - Manuel (Page 7)

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CONNECTOR SYSTEM FOR CONNECTING SOLAR PANELS
Output Wires and Connections on the Solar Panel
Fig. 3.3 shows the output wires and connections on the solar panel. The output wires from the junction box of
the solar panel are terminated with the help of MC4 connectors. The Positive (+) wire is terminated with a MC4
Female Connector (marked "+") and the Negative wire is terminated with a MC4 Male Connector (marked "-").
Warning!
When the surface of the solar panel / array is exposed to sunlight, a DC voltage appears
at the output terminals turning it into a live voltage source. For example, a 24 V nominal solar
panel my put out an open circuit voltage of around 45 VDC that may produce electrical shock.
Multiple solar panels connected in series (to increase the output voltage) will put out higher
lethal voltages To avoid any electrical shock hazard during installation, make sure that the solar
panel / array is covered with an opaque (dark) material to block solar irradiation.
Extending to the Output Wires of the Solar Panel (Fig. 3.3)
Male MC4 mating
connector marked (-)
Male MC4 mating connector
marked (-) for Positive (+)
PV Extension Wire
Female MC4 mating connector
marked (+) for Negative (-)
PV Extension Wire
Female MC4 mating
connector marked (+)
To Charge
Controller
Caution!
*1.
Note that the Positive (+) extension wire has
a male MC4 mating connector marked (-) that
mates with the female MC4 mating connector
marked (+) on the Positive (+) wire of the panel.
*2.
Similarly, the Negative (-) extension wire has
a female MC4 mating connector marked (+) that
mates with the male MC4 mating connector
marked (-) on the Negative (-) wire of the panel.
*2
*1
Fig 3.3. Connecting extension wires to the output wires of solar panel
1. The Positive (+) wire of the solar panel is terminated with a MC4 Female Connector (marked +). Connect
this to the MC4 Male Connector (marked -) that is attached to the Positive PV Extension Wire. Make sure
that the locking tabs “snap in” for a firm connection. The bare end of the Positive extension Wire will
now be of Positive polarity. Use a piece of red sleeve or red tape near the bare end for identification as
the Positive (+) wire.
2. The Negative (-) wire of the solar panel is terminated with a MC4 Male Connector (marked -). Connect
this to the MC4 Female Connector (marked +) that is attached to the Negative extension wire. Make sure
that the locking tabs “snap in” for a firm connection. The bare end of the Negative PV Extension Wire
will now be of Negative polarity.
3. Connect the two PV Extension Wires to the Charge Controller (not supplied).
Warning!
Ensure that the polarity (+ or -) of the wires is identified correctly before connecting to the Charge
Controller. Damage due to wrong polarity may not be covered under warranty.
(Not Supplied)