SMA America, LLC
AC Voltage Configuration
Installation Guide
SB50US-80US-eng-IUS112633
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4.4 Jumper for System Configuration
By setting the jumper, you configure the Sunny Boy for different grid topologies. This means that
operation in system configurations without neutral conductors, such as 208 V and 240 V Delta, is
possible. The following figure provides an overview of the standard settings, the settings for grids
without neutral conductors, and the settings for the fan test.
* The Sunny Boy 8000-US must not be connected to a 208 V grid.
In the event of frost, the fan cannot be inspected.
Below 32 °F (0 °C), the fans are no longer controlled.
208V with neutral conductor 240V with neutral conductor or
277V
208 V Delta, without neutral conductor or *
208 V Delta, grounded *
240 V Delta, without neutral conductor or
240 V Delta, grounded
Fan test