Xantrex Freedom Sequence, Installation Manual

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975-0593-01-01 9
Features
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Wiring Requirements
NOTES:
• Wiring and fuse sizes are governed by electrical codes and standards.
Different requirements apply in different countries and to different
types of installations, for example, boat, home or RV. It is the
responsibility of the installer to ensure that each installation complies
with all applicable codes and standards.
• Ensure that wires and fuses or breakered disconnects are correctly
sized.
• According to the National Electrical Code, branch-circuit conductors
shall have an ampacity not less than the maximum load to be served.
“
Where a branch circuit supplies continuous loads or any combination
of continuous and non-continuous loads, the minimum branch-circuit
conductor size, before the application of any adjustment or correction
factors, shall have an allowable ampacity not less than the non-
continuous load plus 125% of the continuous load.
” However, an
exception to this rule is permitted “ where the assembly, including the
overcurrent protection device (OCPD) protecting the branch circuit is
listed for operation at 100 percent of its rating, the ampere rating of
the overcurrent device shall be permitted to be not less than the sum of
the continuous load plus the noncontinuous load.
” It is important to
note that every appliance (also referred to as “ the assembly ”) is listed
for operation at 100 percent of its rating as well as the circuit breaker
(“
the OCPD ”). The additional current flowing into the appliances will
cause additional heat. If the appliance or circuit breaker has not been
listed for 100% application, temperatures may easily become
excessive for the conductors and insulation.
In recognition of this exception, the Freedom Sequence allows you the
option to disable the Breaker Derating by changing the default
Enabled
to
Disabled
in the Advanced Settings screen.
AC Breakers
ELECTRICAL SHOCK AND FIRE HAZARD
Do not operate the power manager with damaged or substandard wiring.
Make sure that all wiring is in good condition and is not undersized. A
qualified installer must be used. See notes below.
Failure to follow these instructions will result in death or serious
injury.
IMPORTANT:
Appliances and circuit breakers that are 100% rated will
have a listing on their product label similar to “Suitable For Use On Single-
Phase ~AC circuits. For 100% Application.”
Table 1 Recommended AC Breaker Sizes
Type Rating
AC Main circuit
toggle style AC circuit breaker 50 A (max)
Branch circuit
toggle style AC circuit breaker 15 A (max)
FSequence IPM Install Guide.book Page 9 Thursday, October 6, 2011 3:21 PM