How Many Solar Panels In A String

639 views view 2 upvoters.

How many solar panels in a string. How many solar panels can one string inverter handle. Solar panel wiring aka stringing and how to string solar panels together is a fundamental topic for any solar installer. For many new to photovoltaic system design determining the maximum number of modules per series string can seem straight forward right. Ben roque ortiz 1 21 2019 the number of panels a string inverter can handle depends on several factors including the output current and voltage of the panel you are using the number of strings allowed by the inverter the maximum and minimum voltage allowed per string for the inverter and the minimum ambient temperature for your location.

String sizing describes the calculations we make to determine how many panels we should plug into one input for optimal efficiency. That means that we have the flexibility of choosing 15 16 or 17 modules connected in series on one string. Depending on the available installation space and system layout we might need to use a mix of string sizes. For example this grid tied system contains 24 mission solar 360w panels and one sma sunny boy 7700w inverter.

A string of 30 in series will give a system voltage approaching 1000v. The inverter appropriately called a string inverter has three string inputs. You need to understand how different stringing configurations impact the voltage current and power of a solar array. For the example above the allowable string size is between 15 to 17 modules.

Since a se7600a us grid tie inverter can handle up to 10 250w input from a solar panel array it s easy to see that you can wire up to two strings of 5125w into the 7600w inverter. A panel string is a group of panels wired into a single input on your inverter. String sizing is simple as well the minimum input is eight solar panels per string and the maximum rated wattage is 5250w per string.