How to disconnect and ground the photovoltaic inverter
Disconnect the AC and DC switchesInspect your system to check if it has a disconnect switch. If not, place a reflecting or opaque surface over the solar panels.Verify that the voltage is zero by using a voltmeter or multimeter.Unplug the wires. This is simple using MC4 connectors, or you may use a socket wrench.If necessary, take out the bolts and clamping mechanisms.
Disconnect the AC and DC switchesInspect your system to check if it has a disconnect switch. If not, place a reflecting or opaque surface over the solar panels.Verify that the voltage is zero by using a voltmeter or multimeter.Unplug the wires. This is simple using MC4 connectors, or you may use a socket wrench.If necessary, take out the bolts and clamping mechanisms.
The first is the PV disconnect (or Array DC Disconnect). The PV disconnect allows the DC current between the modules (source) to be interrupted before reaching the inverter. The second disconnect is the AC Disconnect. The AC Disconnect is used to separate the inverter from the electrical grid.
The inverter is disconnected from the electrical grid by an AC disconnect. It can be a freestanding switch or a breaker on a service panel, and it is typically placed on the wall between the inverter and utility meter in a solar PV system. Switches known as DC disconnects can stop the flow of DC (direct current).
Solar Panel Grounding: Why, Where, How & When to do it. Solar Solution is the independent source for clear and reliable information on Off Grid Energy Systems.
Disconnect the two-pole circuit breaker and secure against reconnection. Cover the PV module. Release and remove the DC plug from the inverter. Hook a flat-blade screwdriver (blade width: 4 mm (0.16 in)) into the wide slot on the plug and lever it open. At the same time, remove the DC plug without pulling the cables.
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