Owner`s manual

Figure 2-3: Static Switch Jumper Positions
Suggested DC circuit breaker ratings:
Inverter rating 3.5 kVA 7 kVA 10.5 kVA 14 kVA 17.5 kVA 21 kVA
DC breaker rating 125A 250A 375A 500A 650A 750A
2.3.1.3 Connections
All DC input connections are made through the “knock-outs”, located in the top or left side panel. Refer to Figure
2-1. Make sure that the upstream source DC circuit breaker and AC circuit breaker (if applicable) supplying the
inverter are in the off (or open) position. DC input power cables should be sized such that the maximum voltage
drop between inverter bus bar terminals and battery terminals is less than 1.0 volt at the breaker current rating. See
paragraph 2.3.1.2 for breaker rating verses kVA rating. The inverter can accommodate three positive wires and
three negative wires. Two hole lugs, compression dipc with hole spacing of 1: should be used. All ground connec-
tions should be made first, then positive (+) DC input cable should be connected, then the negative (-) connection
last. The DC input landings are marked (+) and (–). Insert the input DC power cable through the selected top or
side panel “knock-out”. Connect the positive (+) cable to the upper terminal connection and the negative (–) cable
3.5 to 21 kVA N+1 Inverter
Installation & Operationpage 2 —6