Installation guide

Installation Guide RN3000US Jan13
37
to the Digiwatts. Voltage drop and other considerations may dictate
that larger size wires be used. Use only solid or stranded wire but not
fine stranded wire.
WARNING!
The DC disconnect for the inverter must have a minimum rating of
600VDC and 25A continuous.
Information
Series fusing may be required depending on the type of PV module used
in the system. See NEC 690.9.
WARNING!
You must connect the wires that carry the DC voltage from the PV array to the
Digiwatts unit in the order described in the following procedure. Deviating from
this procedure could expose you to lethal voltages that can cause serious injury
and/or death.
WARNING!
PV arrays are energized when exposed to light. Use safe working
practices when working on PV arrays.
WARNING!
Always turn OFF all AC and DC breakers and switches in the PV system
and wait a minimum of 15 minutes for the Digiwatts unit to completely
discharge before connecting any wires to the Digiwatts unit or
disconnecting any wires from the Digiwatts unit. Failure to do so could
expose you to lethal voltages that can cause serious injury and/or death.
CAUTION!
Verify the polarity and the open-circuit voltage from the PV strings before
you connect the DC wires to the Digiwatts unit. Applying an open-circuit