Installation and Operation Guide SOLECTRIA
®
XGI 1500-250 Series Inverters
DOCR-071074 (Rev 7, 30 MAY 2023)
26 of 72
DC Connection Using the XGI Remote Combiner (CR1500-xxP-yyS-400)
Wire the DC Connections as shown in Figure 3-15 using the wire sizes shown in Table 3-6.
Figure 3-15 DC Connections from a Solectria CR1500 Remote Combiner
Table 3-6 DC Input Wire Size
Models
XGI 1500-250/250-600, XGI 1500-225-600
XGI 1500-200/200-480, XGI 1500-175-480
Wire Size Range
Cu or Al:
Min: per NEC
Cu or Al:
Max: 750 kcmil, 1 or 2 conductors with lugs
As shown in Figure 3-16, for the DC
connections, use 2-hole compression lugs
with 1.75” spacing, a hole for an M10 stud,
and sized for the wire gauge used. The width
of the lugs must be 2.0 in (50.8 mm) or less.
Torque to 220 in-lbs (25 N-m) using an 18mm
socket and torque driver. Use a hex nut,
Bellville washer and flat washer (these
fasteners are not provided). The terminal
accepts single or parallel conductor sets.
Figure 3-16 DC Conductor Termination
+
-
The DC terminal accepts one or two (parallel) conductors. These may be one or two conductors from a
single PV combiner box, or two conductors: one from each of two separate PV combiners. Figure 3-16
shows the fasteners and connections.