SMA Sunny Boy 3800U, Installation Manual

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5-4 SMA America SB3800U-12:SE2006
Percent voltage drop for 208 V AC and 240 V AC service
Figure 5-2 Energy Losses in Various Wire Sizes and Wire Lengths
The SB3800U is designed to automatically detect which grid voltage it is feeding if a
neutral is connected to the inverter. Depending upon the voltage and phase angle
between L1-N and L2-N, the inverter will determine if it is connected to a 208 V or 240
V grid. Table 5-1 lists the voltage and frequency limits for the AC connection.
Table 5-1 Voltage and Frequency Limits for the AC Connection
Voltage Range for 208 V nominal, line to line 183 V - 229 V
Voltage Range for 240 V nominal, line to line 211 V - 264 V
Frequency Range 59.3 Hz - 60.5 Hz
0,0%
One way distance (feet)
20 40 80 120 160 200 240
0,4%
0,8%
1,2%
1,6%
2,0%
Percent of 208 V AC and 240 V AC
60 100 0 140 180 220
8 AWG
6 AWG
10 AWG
12 AWG