GARD – Installation, Operation and Maintenance Manual
A l e n c o n S y s t e m s L L C - P a g e
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Prepare appropriately Sized Wires so that on both GARD Input and Output:
+ve Terminal = Female Amphenol Pin
-ve Terminal = Male Amphenol Pin
Figure 16: GARD to SPOT connector
External Fusing and Disconnects
GARD acts as a disconnect between its input and output terminals, therefore it is also used to
de-energize the PCS or other power conversion equipments connected to its output terminals.
External disconnects are not required however the PV strings must be fused in order to comply
with the NEC code.
Recommended external fuse rating per channel is Isc x 1.25 at 1000 VDC
When installed, recommended disconnect rating is Isc x 1.25 at 1000 VDC
GARD is built to work with a PV string which has a limited source of current. When used with
batteries which can deliver high currents external overcurrent ptotecctions such as fuses and
disconnects must be connected to the GARD.
