Answer
May 03, 2024 - 07:04 AM
This 250/85 MPPT can handle a lot of power and a high input voltage so you need to take care to avoid shocks when doing the installation. When used with a 48 volt battery system it can handle up to 4900 Watts of power. You will need to use MC4 connectors from the panels to a circuit breaker before you connect to the MPPT. The circuit breaker needs to be rated for the expected voltage and current from the panels. This charge controller can accept up to 250 volts on its input,. You are paying a premium to get a panel that accepts a high voltage so you might as well use it . That will mean putting panels in series to raise the voltage. Having a high input voltage allows you to use smaller wires and have less voltage drop. It also means you will probably need to protect the wires with solid metal conduit. Its important to never exceed the input voltage rating of the MPPT. When looking at the open circuit voltage of the panels (VOC) remember that they can on occasion put out more than that so its best to have a total VOC of 10% less that the maximum 250 volts allowed. You will also need to get the terminal cover for the MPPT so that it isnt possible to access the terminals. The correct terminal cover for this MPPT is the Victron Energy SCC950400200 MPPT WireBox-XL Tr
