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Connecting Multiple Units
975-0400-01-01
2–15
Connecting Multiple Units
In a multiple-unit installation, each XW SCC must be connected to a separate PV
array. For other multiple-unit installation considerations, see “Network
Installation” on page 2–18.
Important:
Only one Charge Controller is to have the PV-GFP fuse installed in
installations with multiple parallel XW SCCs. Before mounting and connecting the XW
SCCs, remove the PV-GFP fuse from each unit except one.
WARNING: Shock hazard and equipment failure
Ensure each XW SCC is correctly connected to its own PV array(s) and that no wires are
crossed. See Figure 2-10. For example, if PV1 positive and PV2 negative are connected to
XW SCC #1 and PV2 positive and PV1 negative are connected to XW SCC #2, current
will flow through the XW SCCs’ chassis and cause the ground fault protection fuse to
blow, followed by short circuit failure.
Figure 2-10
Multiple XW SCC DC Wiring
PV
+
PV
–
BAT
+
BAT
–
PV
+
PV
–
BAT
+
BAT
–
PV
+
PV
–
BAT
+
BAT
–
PV
+
PV
–
BAT
+
BAT
–
+
+
–
–
Grounding not shown.
+
+
–
–
3
2
Incorrect wiring—
wires crossed
Correct wiring—
no wires crossed
PV Array #1
PV Array #2
PV Array #1
PV Array #2
Summary of Contents for XW-MPPT60-150
Page 1: ...XW Solar Charge Controller Owner s Manual XW MPPT60 150 ...
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Page 3: ...XW Solar Charge Controller Owner s Guide ...
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Page 86: ...5 4 ...
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