Ac Disconnect And Over-Current Protection Device - Xantrex Freedom SW 3000 Installation Manual

Planning

AC Disconnect and Over-Current Protection Device

To meet CSA, UL, and electrical code requirements, and to protect system
wiring, the AC inputs and outputs of the inverter/charger must be provided
with over-current protection on both the AC input and output. This
protection may be a circuit breaker or a fuse with a disconnect device (for
simplicity the following refers to breakers). Refer to your applicable
installation codes and the following requirements:
AC Input Protection
The breakers protecting the AC input of the Freedom SW 3000 must be
approved for use on 120 VAC branch circuits, and must be located in each
Line. The breakers must be rated as shown below:
• Split-phase input: No more than 30 amps max in each line.
• Dual input: The neutral current in a dual-input system is the sum of the
two line currents, and must be limited to 60A maximum to protect the
transfer relay in the Freedom SW 3000. Each breaker must not exceed
30A, and the total (sum) of the ratings of the two breakers must not
exceed 60A.
AC Output Protection
The breaker between the Freedom SW 3000 AC output and the AC loads
must be rated to protect the AC output wire size used. If the AC output
wiring is based on the full 30A pass-through rating, then a 30A output
breaker is acceptable. If the AC output wiring is smaller, then the breaker
size will have to be smaller as well, in accordance with applicable electrical
installation codes.
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GFCI Requirements
A GFCI (ground fault circuit interrupter) is a device that deenergizes a
circuit when a current to ground exceeds a specified value that is less than
that required to open the circuit breaker. GFCIs are intended to protect
people from electric shocks and are usually required in wet or damp
locations.
Installation in recreational vehicles requires GFCI protection of certain
branch circuits. Consult all applicable codes.
Tested GFCIs
Compliance with UL standards requires that Xantrex test and recommend
specific GFCIs for use on the output of the inverter. Table 1 lists models
that have been tested and will function properly when connected to the AC
output of the Freedom SW 3000.
Table 1 Tested GFCI Models
Manufacturer Model Number
Hubbell GFR5252WA
Leviton 8599-GY
Pass & Seymour 1594-W
Disconnect Devices
Each system requires a method of disconnecting the AC circuits. If the
over-current protection device is a circuit breaker, it will also serve as the
disconnect. If fuses are used, separate AC disconnect switches will be
needed between the source and the fuses.
Freedom SW 3000 Installation Guide