Xantrex Freedom Marine User Guide

Xantrex
Freedom Marine Series
Inverter/Charger

Freedom Marine
10
15
20
25
30

Owner's Manual

Thank you for purchasing a Xantrex Freedom Marine Series Inverter/Charger.
Xantrex takes pride in manufacturing quality products specifically
designed to meet your power requirements.

Freedom Marine Inverter/Chargers provide silent, efficient and reliable AC power for
a variety of applications. They feature “hands-free” operation, automatic three-stage battery
charging and automatic AC transfer switching. For your convenience, service is available
world-wide from qualified service centers.

If you have any questions about your Freedom Marine Inverter/Charger, please contact
Xantrex toll free: 1-800-670-0707.

For technical support and additional information about Xantrex products, visit our Web
site at www.xantrex.com or e-mail us at [e-mail]

SAFETY SUMMARY

Safety information for installation and
operation is contained throughout this
manual where it applies and is not included
in this summary.

Definitions:

Warning statements identify conditions or

practices which could result in personal injury,
loss of life, damage to equipment or other
property.

Fuse Replacement For continued protection
against the possibility of fire, replace the fuse
only with a fuse of the specified voltage,
current and type ratings.

Power Source To avoid damage, operate the
equipment only within the specified AC (line)
and DC (battery) voltages.

Servicing To reduce the risk of electric shock
do not open this unit. There are no user
serviceable parts inside. Refer all service to
qualified personnel.

Notice of Copyright

Xantrex Freedom Marine Series Inverter/Charger © December 2002 Xantrex International. All rights reserved. Xantrex is a registered
trademark of Xantrex International.

Disclaimer

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT,
CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY
SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.

Date and Revision December 2002, Revision 2 Part Number 445-0194-01-01

Contact Information Web: www.xantrex.com Email: [e-mail]

Phone: [phone] (toll free), 1-604-422-2777 (direct) Fax: [phone]

2

TABLE OF CONTENTS

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 4

Things You Should Know . . . . . . . . . . . . . 6

Circuit Breaker Protection
Thermostat Controlled Cooling
Inverter Idle Circuit
Low and High Battery Shutdown
Power Sharing
Temperature Sensitive Charging

Operation . . . . . . . . . . . . . . . . . . . . . . . . . 8

echo-charge . . . . . . . . . . . . . . . . . . . . . . . . . 10

Optional Remote Control Panels . . . . . . . 11

Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Battery Types
Battery Interconnection
Battery Bank Ratings and Sizing

Battery Charging. . . . . . . . . . . . . . . . . . . . 16

Freedom Battery Chargers

Battery Charger Voltage Settings. . . . . . . 20

Installation Precautions . . . . . . . . . . . . . . 21

Installation Options . . . . . . . . . . . . . . . . . .29

Shorepower Configurations
Inverter/Charger Configurations
Dual In/Dual Out Configuration
Installation Option 1
Installation Option 2
Installation Option 3
Installation Option 4

Installation Checks . . . . . . . . . . . . . . . . . . .37

Troubleshooting . . . . . . . . . . . . . . . . . . . . .39

LED Fault Status

Things to Check

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 43

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Installation . . . . . . . . . . . . . . . . . . . . . . . . . 22

Key Installation Points
Grounding
Neutral Bonding
AC Wiring
AC Input
AC Output
Ground Fault Circuit Interrupters
Remote Control Wiring
TSC Temperature Sensor
DC Wiring
Battery Cable Fusing
Hardware Stack-up Options

Specially designed for use in marine environment

3

INTRODUCTION

This owner’s manual describes the
Freedom Marine Series Inverter/Chargers from
Xantrex. These units perform four distinct
functions:

1. DC to AC power inverting.

2. Automatic transfer switching between
inverter power and incoming AC power.

3. Automatic three-stage battery charging
plus manual battery equalizing.

4. Multiple battery bank charging.

• The inverter provides regulated 120 volt AC
power at a crystal controlled frequency from a
deep cycle battery bank and is rated at:

Freedom 10 1000 watts

Freedom 15 1500 watts
Freedom 20 2000 watts
Freedom 25 2500 watts
Freedom 30 3000 watts

The output is a modified sine wave and is
compatible with most appliances, tools and
other 120 VAC equipment. (Note: Certain laser
printers, breadmakers, digital clocks and small
battery chargers may not operate on modfied
sine wave.) The idle mode reduces battery
power consumption when AC loads are
removed from the inverter output. High effi-

ciency ensures the longest possible battery life
between charges. All models are designed to
deliver surge current for starting loads larger
than the continuous rating of the inverter.

• The internal transfer switch allows the
Freedom Inverter/Charger to be connected to
an external AC source and transfer the source
power through the unit directly to the loads.
When the external AC power source is

disconnected, the transfer switch allows
automatic switching of the loads back to the
inverter.

The Freedom Inverter/Charger operates
as a self-contained backup power system—
just add batteries.

• Freedom battery chargers with temperature
sensitive charging (TSC) are electronically
controlled. The primary charge output current
is rated at 12 volts:

Freedom 10 50 amps DC

Freedom 15 75 amps DC
Freedom 20 100 amps DC
Freedom 25 130 amps DC
Freedom 30 140 amps DC

They are designed to rapidly and optimally
charge wet cell, gel cell, or Absorbed Glass
Mat (AGM)** deep-cycle batteries. Battery
charging is automatically accomplished in
three stages: Bulk Charge, Acceptance
Charge and Float Charge. In most cases, no
attention or maintenance is required.

When using a Freedom or LINK remote
control panel, a manually engaged Equalize
Charge cycle is possible.

**Battery type selection is set on the front of the unit
or with an optional remote (Remote Control Panel or
Link Instrument).

4

Multiple Battery Bank Charging

Multiple battery bank charging is provided
through additional output from the built-in echo­charge. The echo-charge is used to charge
start or auxiliary batteries. This Digital echo­charge is current limited to 15 amps and
follows the three-stage charge curve of the
inverter/charger and battery setting of the
house battery bank. The number of active
echo-charge outputs depends of the model of
the inverter/charger.

INTRODUCTION

Model

Freedom 10
Freedom 15
Freedom 20
Freedom 25
Freedom 30

Multi-bank outputs

1
1
1
2
2

echo-charge 1

echo-charge 2

Freedom Marine Inverter/Charger

5

THINGS YOU SHOULD KNOW

Circuit Breaker Protection

The Freedom Inverter/Charger is
supplemental circuit breaker protected. The
INVERT/CHARGE breaker on the front of the
unit protects against sustained inverter/
charger over-current conditions.

This supplemental circuit breaker protects
the output of the unit when operating in “Invert
Mode” and protects the internal battery charger
circuits when operating in “Charge Mode.”
When an over-current condition occurs, the
circuit breaker is reset by pushing the button
back in after the fault is removed. This circuit
breaker is not suitable for branch circuit pro­tection. To comply with NEC, additional branch
circuit rated breakers may be required
between the output of the unit and the load.

Freedom 25 and 30 have two outputs.
Both outputs are protected by the supplemental
circuit breaker when operating in “Invert Mode.”
During transfer/charge operation, the outputs
are protected by the circuit breakers feeding
the two inputs to the unit.

Thermostat Controlled Cooling

Freedom Inverter/Chargers are equipped
with a thermostatically controlled fan that cools
the unit so it can operate continually at its rated
output.

Inverter Idle Circuit

The idle circuit reduces battery power
consumption when no AC load is present.
Response from idle is instantaneous. When
using a Freedom or Link remote control panel
the idle threshold is adjustable. The unit does
not produce 120 volts when in idle. An idle
pulse is sent out approximately twice a second
to see if a load is present. To bring the unit out
of the idle condition, apply a load larger than
the idle set point.

Low and High Battery Shutdown

When in inverter mode, if the battery
voltage drops to 10.0 volts, the inverter will
automatically shut off. Charge the batteries to

13.5 volts to automatically resume operation.

Voltage shutdown also occurs for a high
battery condition at 15.5 volts. Operation will
resume automatically when the battery voltage
drops below 15.5 volts. Check all DC sources
on the system for the reason for the excessive
voltage.

Power Sharing

When connected to an external AC source
the battery charger and transfer functions are
engaged. A unique Power Sharing feature
automatically reduces the AC power consumption
of the battery charger when the loads
threaten to trip the incoming circuit breaker.

KNOCKOUT

AC INPUT

6

COMPRESSION

TERMINAL

BLOCK

installed

KNOCKOUT

AC OUTPUT

Freedom 25 and 30 have two AC inputs.
The battery charger is supplied AC from AC
input #1. These models will reduce the current
available to the charger when the demand for
current to the load on AC output #1 reaches
the factory default setting. AC input #2 is a
direct transfer to AC output #2 and has no
power sharing control.

THINGS YOU SHOULD KNOW

The Power Sharing set point of each unit
has a factory default setting. This can be
changed when using the Freedom or Link
remote control panel. Refer to the Freedom
Remote Control Panel or Link manual for
information on Power Sharing setting and
adjustment.

Temperature Sensitive Charging (TSC)
When the supplied battery temperature

sensor is connected to the unit and the
batteries, the charge voltage is controlled
based on battery temperature. The charger
adjusts the charge voltage to the best level
insuring safe charging for selected battery
type. Charge voltage regulation optimizes the
battery life cycle.

TSC Sensor

Electronic Protection

Fast-acting electronic circuits protect
the inverter from overloads and short circuits.
Other protection includes a low and high
battery voltage cutoff and automatic shutdown
if an over temperature condition occurs. When
the fault condition is corrected, the unit will
automatically reset. For example: remove
overload, charge batteries or allow to cool.

Battery

7

OPERATION

The Freedom Inverter/Charger provides
120 volt AC power from auxiliary DC batteries,
automatic battery charging and automatic AC
transfer switching between an external AC
source and inverter mode AC output.

The Freedom Inverter/Charger may be
operated with or without a remote control panel
or Link instrument.

When operating the inverter/charger with­out a Freedom or Link remote control panel:

Front Panel Controls and Indicators

INVERT MODE

The INVERT push-button switch is
located on the front of the unit.

• To turn the inverter ON, press and hold
the INVERT switch until the INVERT LED is
solid green. The unit is now inverting. Press
the INVERT switch again to turn the inverter
OFF. Note: The charge LED will be blinking
slowly indicating Charger ready status but
external AC power is not connected.

CHARGE MODE

The CHARGE push-button switch is located

on the front of the unit.

When external AC is applied to the AC
input of the unit, the charger automatically
turns ON. The CHARGE LED will be solid
green. The unit is now charging. Press the
CHARGE switch again to turn the charger OFF.
The charger defaults to ON when operating
without a remote or with the Freedom Remote
Control Panel. Refer to the Link manual when
using a Link remote control panel.

INVERT

STATUS LEDs

Each Status LED performs two functions,
providing operation status and battery type
selection.

Status LEDs

Front Panel

CHARGE

INVERT

INVERT / WET

CHARGE / GEL1

TSC

REMOTE

OVERTEMP
OVERLOAD / AGM

LOW BATTERY / GEL 2

Operation Status

INVERT - Green LED

• When the LED is solid green, the unit is
in invert mode. This occurs by pressing the
INVERT switch.

• When the LED is blinking slowly (1 time
per second), the inverter is in standby with AC
power applied and the transfer switch engaged

• When the LED is OFF, the inverter is
OFF.

CHARGE - Green LED

• When the LED is solid green, the unit is
in the charge mode and external AC power is
being supplied.

• When the LED is blinking slowly, (1 time
per second) the charger is ready, but external
AC power is not available.

• When the LED is OFF, the charger has
been manually turned OFF. This can only be
accomplished while AC power is being
supplied since the charger will automatically
restart each time AC power is applied.

8

CHARGE

Freedom Marine 20

OPERATION

NOTE: When AC power is available, the
default setting for the charger is ON. If the unit
was manually turned OFF and AC power is
interrupted and becomes available again, the
charger will return to ON.

LOW BATTERY - Red LED

• When the LED is OFF the battery

voltage is normal, between 10.5 and 15.0
volts DC.

• When the LED is solid red, it indicates a
battery warning condition, the battery voltage is
below 10.5 volts DC or above 15.0 volts DC.

• When the LED is blinking slowly, (once
per second), a battery shutdown has occurred.
The voltage is either below 10.0 volts DC or
above 15.5 volts DC.

• When the LED is blinking rapidly (five
times per second), a potential problem in the
DC system has been detected. Check your
batteries, battery cables and DC loads.

OVER-TEMP/OVERLOAD - Red LED

• When the LED is Off operation is

normal.

• When the LED is red, there is an over­temp or overload condition. Check for
excessive loads or short circuit on the output
of the inverter. Correct the condition and restart
by pushing the INVERT switch.

when AC power from an external source is
connected to the output of the inverter. Inspect
wiring for a possible input/output wiring error.
This condition must be corrected before further
operation. A backfeed will damage the unit and
void the warranty.

Battery Type Selection

• Battery type setup. To enter the battery
type select mode, press and hold the INVERT
switch for five seconds. The status LEDs will
change from indicating status information to
OFF. Press the CHARGE switch once. One of
the four LEDs will blink rapidly, indicating the
existing battery type selection.

Press the CHARGE switch again to
change the battery type. Continue to press until
the desired battery type is selected. If the
CHARGE switch is not pressed for five seconds,
the unit will return to normal operation and the
battery type selection will have been made.
Refer to page 20 for additional information on
battery type settings.

WET GEL 1 GEL 2 AGM

Status LEDs

CHARGE

INVERT

INVERT / WET

CHARGE / GEL1

TSC

REMOTE

OVERTEMP
OVERLOAD / AGM

LOW BATTERY / GEL 2

• When the LED is blinking slowly (once
per second), an over-current condition or a
short circuit has occurred. The system has
shut OFF and will not automatically restart.
Correct the fault condition and manually restart
the system by pushing the INVERT switch.

LOW BATTERY & OVER-TEMP/OVERLOAD

- Red LEDs

When both LEDs are blinking, an AC

backfeed was detected. A backfeed occurs

Front Panel

When the 12 volt input to the unit is
disconnected, the battery type setting is stored
in non-volatile memory. When the unit is
reconnected, the battery type selection
conveniently returns to the previous setting.

If installed with the Freedom or Link
remote control panel, the unit will be set up
and controlled from the remote. Refer to the
remote manual for more information.

9

OPERATION

When a Freedom or Link remote control panel
is connected to the unit, the switch on the unit
or on the remote may be used to turn the unit
ON/OFF. If the unit is turned ON using the front
panel switch and then turned OFF using a
Remote or Link, the unit will not be completely
OFF. If the unit will not be used for an extended
period of time, turn the unit completely OFF.
The unit is completely OFF when the LED dis­play on the unit is OFF.

Over-temp

Low
Battery

Remote

TSC

TSC (Temperature Sensitive Charging)

This provides for the connection of a
sensor to measure battery temperature for
compensated charging. If no sensor is
connected the charge voltage levels are set to
defaults based on battery type.

echo-charge

The echo-charge feature is incorporated
in the Freedom Marine Inverter/Charger to
enable multiple battery bank charging of the
start or auxiliary battery. Freedom 10, 15, 20
have one active echo-charge output.
Freedom 25, 30 have two active outputs.

The echo-charge automatically switches
On/Off, charging an auxiliary or start battery
without affecting the main house battery bank.
The maximum charge current is 15 amps at

14.4 volts.

The echo-charge is a voltage follower, fol­lowing the three-stage charge modes of the
Freedom Marine Charger. The echo-charge
senses if the start battery needs charging and
diverts a portion of the charging current (up to
15 amps) to the start battery. This method pro­tects the auxiliary battery from overcharging

and ensures a long life for the battery.

echo-charge

Freedom Marine 20

NOTE: The charger will always follow the

house battery setting, even if you mix the type
of batteries in your house and start battery
bank. If the house battery bank is either GEL
or AGM and the start or auxiliary battery is wet/
flooded, the charger will follow the GEL or AGM
voltage setting.

The echo-charge will turn ON any time
the house battery is above 13 volts, regardless
of the charging source.

OPTIONAL REMOTES

If using one of the remotes, refer to the
installation instructions included with the
remote.

10

OPTIONAL REMOTE CONTROL PANELS

Remote Control Panel

An optional remote control panel is
available. The LED bar graphs on the remote
control panel show battery voltage and DC
current in both inverter and charger modes.

Easy-to-see red, yellow and green LEDs
show the battery state-of-charge. Power
Sharing, charger ON/OFF, and inverter ON/
OFF controls are provided. SET UP features
include selection of Idle Threshold, Battery
Type and Battery Capacity.

Remote Control Panel

LINK 2000

The Link 2000 has the same features as
the Link 1000, providing inverter/charger
control and complete battery state-of-charge
information. It monitors two battery banks.

LINK 2000

LINK 2000-R

The Link 2000-R adds the ability to
regulate an engine-driven alternator. The
precision regulator in the Link 2000-R allows
the alternator to be controlled as a three-stage
battery charging system.

Advanced Remote Control Panels
Link Instruments

Advanced remote control panels are also

available: the Link 1000, 2000 and 2000-R.

LINK 1000

Link 1000 controls the Freedom Inverter/
Charger and provides complete battery
state-of-charge information including DC voltage,
current, amp hours consumed, Time
Remaining and historical data for a single
battery bank.

LINK 1000

If a Link Instrument is used to control the
inverter/charger, refer to the Link Owner’s
Manual for installation, setup and control
information.

11

BATTERIES

BATTERY TYPES

Use only deep-cycle batteries with your
Freedom Inverter/Charger. These fall into three
broad categories: wet cell, gel cell and
Advanced AGM (Absorbed Glass Mat)
batteries.

Wet Cell Batteries

True deep-cycle wet cell batteries are
characterized by relatively thick internal plates
that are alloyed with antimony.

Wet cell batteries will give off gas as a
natural result of charging and will experience
some water loss. It is very important that

the electrolyte level be checked frequently

and topped off with distilled water when
necessary. Follow the battery manufacturer’s
recommendations for maintenance.

Never allow the top of the battery plates to
be exposed to air, as contamination of the cell
will result. Keep the tops of batteries clean.
Always provide adequate ventilation for the
battery storage compartment.

Do not use ordinary car batteries or
engine starting batteries with your inverter/
charger. Beware of any battery that is rated
only in Cold Cranking Amps (CCA). This is a
rating which applies only to engine starting
batteries. In general, most wet cell batteries
that are described as hybrid type batteries,
suitable for either engine starting or deep-cycle
applications, are a compromise and will have
limited life if deeply discharged.

Common 12 volt marine/RV deep-cycle
batteries are acceptable. Golf cart
batteries perform well and may have a
longer life. These 6 volt batteries must be
used in series connected pairs. High quality
deep-cycle batteries offer good
performance and are available in a wide

variety of sizes.

12

BATTERIES

Beware of so-called maintenance-free wet
cell batteries. These batteries have calcium

alloyed with the lead liquid. They are sealed
and water cannot be added. Do not confuse
them with true gel cell or AGM batteries—they
will not hold up well to deep discharging and
repeated cycling.

Gel Cell Batteries

Gel cell batteries are lead-acid batteries
similar in many ways to the common wet cell
battery, but differences in the chemistry and
construction provide some unique features.

• No Maintenance

• Low Self-Discharge Rate

• Low Internal Resistance

Even though gel cells are sealed
batteries, the battery compartment should still
be ventilated.

Series Configuration

Connecting two batteries in series will
double the voltage of the battery bank. For
instance, two 6 volt batteries connected in
series will produce 12 volts. The amp-hour
capacity of the battery bank will be the same
as each individual battery. Example, two 6 volt
220 amp-hour batteries in series will produce
one 12 volt 220 amp-hour battery bank.

+

+

Advanced AGM (Absorbed Glass Mat)
Batteries

This battery is lead acid but maintenance free.
They hold the liquid electrolyte in a sponge-like
material. The performance is similar to gel cell
batteries. The charge parameters are similar
to wet cell batteries.

Battery Selection

The most important feature to consider in
making your battery selection is to select true
deep cycle batteries rated in amp hours (Ah)
and sized to match your power requirements.

BATTERY INTERCONNECTION

In most cases, you will be using a bank of two
or more batteries with your inverter/charger.
You may connect batteries together in two
configurations—series and parallel—
depending on their voltage.

Series Increase Voltage

+

6V

_

EACH BATTERY

CAPACITY:

220

AMP HOURS

@ 6 VDC

+

6V

_

Series

+

12V INVERTER

_

TOTAL BATTERY

BANK CAPACITY:

220

AMP HOURS

@ 12 VDC

13

BATTERIES

Parallel Configuration

Connecting two batteries in parallel will
double the amp-hour rating of the battery bank,
while the voltage will be the same as each
individual battery. Example, two 12 volt 105
amp-hour batteries in parallel will produce one
12 volt 210 amp-hour battery bank.

+

+

Parallel

Parallel Increase Amp-hour Capacity

+

12V

_

EACH BATTERY

CAPACITY:

105

AMP HOURS

@ 12 VDC

12V

_

+

+

1

2V INVERTER

_

TOTAL BATTERY

BANK CAPACITY:

210

AMP HOURS

@ 12 VDC

Note: It is not advisable to connect
batteries of different case sizes or amp-hour
ratings in the same battery bank.

Always use properly sized wire and
terminals for your interconnecting battery
cables. For size information refer to NEC
requirements or contact your local
electrician.

BATTERY BANK RATINGS AND SIZING

Deep-cycle batteries are usually rated in
amp hours. The amp-hour rating is based on a
20-hour discharge rate, therefore, a 100
amp-hour battery can deliver 5 amps for 20
hours. If the discharge rate is greater than 5
amps, the available amp hours are decreased.
For example, if the load is increased to 100
amps, only about 45 amp hours will be avail­able at this rate of discharge.

Deep-cycle batteries can be discharged
about 80% of capacity before damage occurs.
Shallow cycling will result in much longer
battery life. Calculating a battery bank size
based on 50% discharge cycling is generally
considered to be a good compromise between
long battery life and size.

Only similar batteries should be

connected together in one bank. Do not

connect old and new batteries together or wet
and gel cell batteries together. In the above
drawing, the load is connected to the positive
terminal of the first battery and the negative
terminal of the last battery. This practice helps
to balance the battery bank and is called
cross-connecting the battery bank.

14

BATTERIES

To achieve 50% cycling you should
calculate your amp-hour consumption
between charging cycles and use a battery
bank with twice that capacity**. Each AC
appliance or tool has a rating plate on it and will
be rated in either AC amps or watts or AC VA
(volt-amps) apparent power. To calculate amp­hour consumption, use one of the formulas to
the right to calculate the DC amp-hour draw for
a 12 volt system.

Calculate the amp hours for every AC
appliance or tool that will be operated on the
inverter. This will provide the total number of
amp hours used between recharges. Size the
battery bank using this number as a guideline.
A good rule to follow is to size the battery bank
a minimum of two times larger than the
total amp-hour load requirement. Plan on
recharging when 50% discharged.

**Batteries are typically charged to 85% of full
charge when charging with alternators without 3-stage
regulators.

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AMP-HOUR CONSUMPTION FORMULAS

(AC amps x 10) x 1.1 x hours of
operation = DC amp hours

(watts/ DC voltage) x 1.1 x hours of
operation = DC amp hours

(AC VA/ DC voltage) x 1.1 x hours of
operation = DC amp hours

DC voltage is 12, 24 or 32 depending on

your system.

In all formulas, 1.1 is the correction factor for

inverter efficiency.

Typical Power Consumptlon

The chart identifies typical power
consumption for common AC loads. Use it as
a guide when identifying your power
requirements.

Many electric motors have
momentary starting requirements
well above their operational rating.
Start up watts are listed where

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appropriate. Individual styles and
brands of appliances may vary.

If using the same battery
bank for the inverter and other
DC loads, be sure to consider
the power consumption of the
DC loads when sizing the
battery bank.

NOTE Certain laser printers, breadmakers,
digital clocks and appliance/tool chargers

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may not operate on modified sine wave.

15