Specifications

Installation
3–8 975-0581-01-01
This manual is for use by qualified personnel only
Wiring - Specific
This section provides information for connecting the AC and DC conductors and
the ground conductors. Table A-5 and Table A-6 on page A–5 show the
specifications of the AC and DC wiring.
Overcurrent protection for the AC and PV wiring, the external transformer, and
other devices in the system must be provided by the installer, based on the
current in the system (see Appendix A, “Specifications””), the wiring size used,
the ratings of other devices in the system, and in accordance with all applicable
installation codes.
To connect the transformer to AC interface enclosure:
1. Follow the lock-out and tag-out procedures on page viii.
2. Open the door of the AC interface enclosure.
3. Route the AC power conductors L1, L2, L3 and ground cable(s) through the
conduit from the transformer to the AC interface enclosure.
4. Connect the ground conductors to the ground bar (PE). Terminations for the
ground conductors within the AC interface enclosure at the ground bar are
made with M12 hardware. Cables to these terminals must use a crimp-on
type ring terminal or compression-type lug. See Figure 3-6 for the location of
these terminals.
5. Connect the AC power conductors at the L1 (A phase), L2 (B phase), and L3
(C phase) terminals using the M12 hardware. Cables to these terminals must
use a crimp-on type ring terminal or compression-type lug. See Figure 3-6 for
the location of these terminals.
Figure 3-6 AC Terminal Connections from the External Transformer
L1 Phase terminal
L3 Phase terminal
L2 Phase terminal
Ground
Bar (PE)