Preparing for the installation, Wiring, Ac circuit breaker requirements – Xantrex Technology GT 2.5-DE User Manual
Page 29: Ac and dc disconnects, Preparing for the installation –9
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Preparing for the Installation
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Preparing for the Installation
Ensure your local utility is consulted for any requirements for connecting to or
returning power to the grid. Obtain all permits necessary to complete the
installation. Consult your local and national electrical codes for more information.
Wiring
Wire size and length will be determined by the location of each component and
their relative distance to each other. Wire sizes may also be affected by whether or
not conduit is used.
AC Circuit Breaker Requirements
The main utility service panel must dedicate a double pole breaker for each
inverter installed. This breaker must be capable of handling the rated maximum
output voltage and current of the inverter (see “Electrical Specifications” on
page A–2).
AC and DC Disconnects
Depending on the installation, external AC and/or DC disconnects may be
required, and they may need to be in a location easily accessible to utility or fire
personnel. Consult local codes and authorities for additional information.
Important:
In this manual “wiring” and “wires” are used in reference to both AC and
DC wiring/cabling and wires/cables.
Important:
Wire size should be based on the maximum power rating of the inverter.
Ensure that wiring is not undersized. Undersized wiring can result in significant power
losses and reduction in system efficiency.
WARNING: Shock hazard
Never connect or disconnect the PV modules from the GT Inverter under load (by pulling
the PV quick connects before disconnecting the grid). Always disconnect the GT Inverter
from the grid first.