AC Connections, Continued
AC Wiring Preparations
1. Remove the system’s front cover.
2. Make sure the
Tucson Micro inverter system input and output voltages are correct for the particular application.
Remember that the Tucson Micro system provides single-phase power only.
3. The input circuit breaker in the input service panel provides the means for disconnecting AC to the
Tucson Micro
inverter system. Only authorized persons shall be able to disconnect AC to the unit. (See NEC 700-20 and 700-21.)
CAUTION:
To prevent electrical shock or equipment damage, for all units, make sure the Tucson Micro battery is
disconnected and the AC input circuit breaker at the service panel is OFF before making AC connections to the Tucson
Micro inverter system.
4. If not previously done, remove cabinet knockouts for AC Input and AC Output as described in the
Cabinet Mounting
section on pages 5 and 6 depending on mounting method.
CAUTION:
Do not drill the cabinet; drill filings may damage the unit and prevent it from operating. If larger knockouts are
needed, use a chassis punch to enlarge the appropriate knockout. Do not add additional or unnecessary knockouts.
5. Install the input and output conduits.
6. Run the AC Input service conductors and AC Output conductors through separate conduits.
Tucson Micro inverter
system emergency output circuits shall be installed in dedicated conduit systems and not shared with other electrical
circuits as described in NEC 700-9(b).
Tucson Micro
models can be configured for either 120VAC or 277VAC input connections, as well as various modes of
output operation as described in this section. Refer to the appropriate wiring diagrams to properly connect the utility AC
power, fixtures and external switching or dimming device (where applicable). Perform all wiring procedures in accordance
with applicable codes.
AC Input Voltage Selector Plug Installation
Tucson Micro
inverter systems may be operated from either 120VAC or 277VAC power sources. Determine the actual AC
input line voltage and install the provided Voltage Selector Plug in the position next to the system terminal block that
matches the line voltage potential as shown in the illustration below. (Fig. 1)
CAUTION:
Failure to install the Voltage Selector Plug will prevent system operation. Installing the Voltage Selector Plug in
the position that does not match the actual AC input line voltage will damage the unit, void the warranty, and may cause a
dangerous or unsafe condition.
Fig. 1
Tucson Micro Series
Installation Instructions
10070249
R
EV 1 - 06/21
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800-533-3948 www.barronltg.com
