Owner`s manual

Introduction

Figure 1-3, Left Side Features

The left side of the MS Series is equipped with the following features (see to ﬁ gure 1-3):

(13) Exhaust Air Vent - ventilation openings that allow heated air to be removed by the

internal cooling fan.

(14) Model/Serial Number Label - includes model/serial number information, date of

manufacture and inverter and charger speciﬁ cations. See Appendix A for more information

and to ﬁ nd the available models.

(15) AC Wiring Access Cover - provides access to the internal AC wiring terminal block.

This terminal block is used to hardwire all inverter AC input and output wiring connections.

Remove the two screws to access the AC wiring terminal block.

(16) Input circuit breaker - this circuit breaker protects the unit’s internal charger

wiring and pass-thru relay while in the standby mode. This circuit breaker will pop out

when it opens, press in to reset. This input circuit breaker is not branch-circuit rated,

therefore branch-circuit rated breakers must be installed in the inverter’s input wiring.

(17) Output circuit breakers - these circuit breakers are branch-rated and are only

provided on the MS2012-15B and MS2012-20B models. They allow the inverter AC loads

to be connected directly to the inverter’s output without requiring an inverter subpanel.

These circuit breakers pop out when they open, press in to reset. They can also be

manually pulled to disconnect the inverter’s loads.

Info: The output breakers (CB1 and CB2) are only available on models MS2012-15B

and MS2012-20B.

CAUTION: Inverter models without the output Circuit breakers (CB1 and CB2) must

have branch-circuit rated breakers installed in the inverter’s output wiring.

CAUTION: The inverter’s internal AC transfer relay is rated for 30 amps per leg (30

amps for AC HOT 1 and 30 amps for AC HOT 2) or 60 amps total. The pass-thru current

must be no greater than 30 amps per leg or damage to the relays may occur.

•

Exhaust

Air Vent

(and on

Right Side)

(13)

(14)

(15)

Model/Serial Number Label

(17)

Output Circuit Breakers*

Input Circuit Breaker

(16)

(*Only available on certain models)

AC Wiring Access Cover