SMA Sunny Boy 3800U, Installation Manual

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SB3800U-12:SE2006 SMA America 5-3
CAUTION: The AC and DC knockouts in the SB3800U chassis
are sized for 3/4-inch rigid conduit (EMT).
DO NOT enlarge
any of these holes, as this is may violate the listing and will void
the SMA warranty.
Wiring the AC Output
This subsection provides complete, step-by-step procedures for wiring the AC output
from the SB3800U to the utility grid.
AC Connection Requirements
WARNING: All electrical installations must be done in
accordance with all local electrical codes and with the
National Electrical Code (NEC), ANSI/NFPA 70. Use
#8 AWG (maximum), 90 °C (194 °F), copper wire for all
AC wiring connections to the Sunny Boy 3800U. Voltage
drop and other considerations may dictate that larger size
wires be used.
WARNING: The National Electrical Code (NEC) states that
the inverter must be connected to a dedicated circuit, and
that no other outlets or devices can be connected to the
same circuit. See NEC Section 690-64(b)(1). The NEC also
imposes limitations on the size of the inverter and the
manner in which it is connected to the utility grid. See NEC
Section 690-64(b)(2).
The diagram in Figure 5-2 shows the potential losses in AC wires with respect to the
cross-sectional area of the cable and the length of the cable. Use the following tables to
determine the best wire size to use for your particular installation.
Terminal in. lbs. nm.
AC & DC Terminal Blocks 18 2
Cover Screws 79 9