PVI 3000S, 4000S, 5000S, 5300 Series Inverters
Installation and Operation Manual (Rev A)
22
AC Circuit Breakers:
A dedicated AC circuit breaker in the home or building circuit panel is required for the PV
inverter. Every PVI requires a 208/240V AC rated 2–pole circuit breaker. The following is a table
showing the appropriate circuit breaker for the PVI 3000S, 4000S, 5000S, and 5300 (based on
number of Amps).
PV Inverter Model
PVI 3000S
PVI 4000S
PVI 5000S
PVI 5300
Circuit breaker used
(Amp) for 240V and
208V
20A
25A
30A
30A
4.1
Connecting the Inverter Wiring
WARNING:
The wiring of the PV inverter’s AC and DC connections must only be done
with the building AC circuit breaker off, locked out and the PV array disconnected or
covered with an opaque material (or other method that establishes electrically safe
working conditions).
WARNING:
Follow PV module manufacturer’s installation directions. PV arrays produce
electrical energy when exposed to light and could create a hazardous condition.
Disconnect array conductors when wiring the inverter or cover the array with an opaque
material prior to wiring.
WARNING:
Before connecting the connectors of the PV module to the DC inverter
terminals, check the correct polarity and admissible PV module voltage between the (+)
and the (-) wire connectors of the PV module. The PV module open circuit voltage must
be below 600V DC (V
pv
< 600V DC) under all temperature conditions per code.
WARNING:
Even when in the off position, the fused PV combiner and the DC terminals
will remain live on the PV side.
The cover of the wiring box needs to be removed before wiring the inverter. First the DC/AC
disconnect switch shall be turned to the OFF position as shown in the Figure 4.1.1. Remove the 4
screws, and then the cover of the wiring box shown in the Figure 4.1.2.