Connect this cable to the mc4 female adaptor.
Positive and negative wires fkr solar panel.
If this is an ungrounded system also compliant in some circumstances then neither wire should be white.
White for negative denotes this is a grounded system and the negative is grounded.
Set the volt meter to read dc volts.
Make sure that the locking tabs snap in for a firm connection.
There are three types of designs to connect the pv strings to the solar power inverter.
Short circuit between the positive and negative terminals of the battery or short circuit between the positive and negative wires of the terminal may cause fire and explosion before connecting the battery to the solar system make sure the battery voltage is higher than 6v then start the controller if the system is 24v make sure the.
If the volt meter shows a negative number indicated by a minus symbol the leads are the wrong direction.
Red and black are acceptable colors to use.
One wire is the dc positive and the other is the dc negative.
Connect the positive wire from the solar panel to a battery cable with a fusible link between the battery and the solar panel.
When solar panels are wired in parallel the positive terminal from one panel is connected to the positive terminal of another panel and the negative terminals of the two panels are connected together.
Use a piece of red sleeve or red tape near the bare end for identification as the positive wire.
Connect the negative wire of the solar panel to the negative terminal of the battery.
The positive wires are connected to a positive connector within a combiner box and the negative wires are connected to the negative connector.
Just like a typical battery you may be familiar with solar panels have positive and negative terminals.
When stringing in series the wire from the positive terminal of one solar panel is connected to the negative terminal of the next panel and so on.
Grounding the positive is also nec compliant and would thus have a white wire carrying positive.
To measure across the solar panel terminals or wires put the red positive meter lead on one side and the black negative on the other.
This will help prevent a fire or battery explosion in the event of a short in the wiring.