POWER ON BOARD MAXX SST Instruction Manual

3,000 Watt
Power Inverter
VEC551POB
USER’S MANUAL
& WARRANTY INFORMATION
IMPORTANT SAFETY INFORMATION, SAVE THESE INSTRUCTIONS
TO REDUCE THE RISK OF INJURY, USER MUST READ AND UNDERSTAND
THIS INSTRUCTIONAL MANUAL. THIS MANUAL CONTAINS IMPORTANT
INFORMATION REGARDING THE OPERATION AND WARRANTY OF THIS
PRODUCT. PLEASE RETAIN FOR FUTURE REFERENCE.
www.vectormfg.com
4140 S.W. 30th Ave., Ft. Lauderdale, FL 33312
Toll Free: [phone]
8
Fault Protection Code and Troubleshooting Guide
INVERTER POWER SWITCH TURNED ON
SPECIFICATIONS
Surge Capacity Peak: 6000 watts
Maximum Continuous Power: 3000 watts
No Load Input Statis Current: 0.5 amps
Max. Efficiency: 90%
Input Voltage Range: 10.5-15 volt DC
Output Voltage: 120 volt AC, 60 Hz
Low Voltage Alarm: 10.6 volts
Low Voltage Shutdown: 10.0 volts
Wave Form: Modified sine wave (MSW)
Output Receptacles: North American standard outlet
Input Fuses Internal
Input Cables: #4 AWG/3 ft.
Additional Protection Overload, overvoltage, overheating
Trouble/Indication Possible Cause Suggested Remedy
No AC output DC input is below
10 volts Recharge the battery.
DC input fuse(s)
blown Investigate for short circuit. Replace with same type fuse.
Inverter hot Disconnect load from inverter.
Operate inverter without load for a
few minutes. Reconnect load.
Excessive start-up
load With the appliance switch on, turn the inverter Power Switch ON, OFF
and back ON several times. If
appliance won’t start, it is
incompatible with inverter.
Low battery alarm
sounds continuously Bad connection or wiring; wrong
DC cable gauge
Tighten all DC connections;
replace DC cable with heavier
gauge
Low battery
voltage Recharge battery. Remove load from inverter while recharging
battery.
Motorized power tool
will not operate Excessive start-up load If appliance does not start, appliance is drawing too much voltage and will
not work with this inverter.
Motorized power tool
does not operate at
correct speed
Purely inductive
load Make the load not purely inductive (i.e., operate an incandescent lamp
at the same time as power tool).
Television/radio
interference Snow in picture, “buzzing” sound Keep inverter and antenna distant from each other. Use shielded
antenna. Connect antenna to
amplifier.
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page 8

ii iii
IMPORTANT SAFETY INSTRUCTIONS
WARNINGS
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, EXPLOSION OR INJURY:
• Do not connect to AC distribution wiring.
• Remove appliance plug from outlet strip or turn off inverter before working on the
appliance. Multiple outlet power strips with switches and circuit breakers only
interrupt power to the “hot” receptacle terminals. The “neutral” terminals remain
powered with respect to the “ground” terminals.
• NOT approved for ignition protected areas. Do not make any electrical connections
or disconnections in areas designated as IGNITION PROTECTED.
• This is not a toy — keep away from children.
• This equipment employs components that tend to produce arcs or sparks. DO NOT
install in compartments containing batteries or flammable materials.
• Use this unit in properly ventilated areas ONLY.
• Do not open — there are no user-serviceable parts inside.
• Do not insert foreign objects into the outlet.
• Do not expose the unit to water, rain or snow.
CAUTIONS
• Always inspect battery supply connections and cables to ensure they are tight and
that cable insulation is not damaged.
• Do not use with positive ground electrical systems*. Reverse polarity connection will
result in a blown fuse and may cause permanent damage to the inverter and will
void warranty.
*The majority of modern automobiles, RVs, trucks and boats have negative ground systems.
• This inverter will not operate high wattage appliances or equipment that produces
heat, such as hair dryers, microwave ovens and toasters.
• Grounding the Neutral will cause the inverter to shut down. Do not operate this
inverter if it is wet. Do not install in engine compartment — install in a well
ventilated area.
• This inverter has not been tested for use with medical devices.
• Do not attempt to install or operate this unit while operating a motor vehicle.
Important Cable Information
Substantial power loss and reduced battery operating time results from inverters installed with cables that
are not able to supply full power. Symptoms of low battery power can result from cables that are either
excessively long or an insufficient gauge. Marine installations are also subjected to vibration and stresses
that exceed those of other mobile installations. Therefore, the installer/operator should be especially
aware of the requirements to maintain secure, tight, water-resistant electrical connections and to provide
for strain relief for DC cables and appliance wiring. Cable insulation must be the appropriate type for
the environment.
Read This User’s Manual Before Using This Power Inverter.
SAVE THESE INSTRUCTIONS
TWO YEAR LIMITED WARRANTY PROGRAM
This limited warranty program is the only one that applies to this product, and it sets forth all the
responsibilities of Power On Board, regarding this product. There is no other warranty, other than those
described herein. Any implied warranty of merchantability or fitness for a particular purpose on this product
is limited in duration to the duration of this warranty.
This Power On Board product is warranted, to the original purchaser only, to be free of defects in materials
and workmanship for two years from the date of purchase without additional charge. The warranty does
not extend to subsequent purchasers or users. Manufacturer will not be responsible for any amount of
damage in excess of the retail purchase price of the product under any circumstances. Incidental and
consequential damages are specifically excluded from coverage under this warranty.
This product is not intended for commercial use. This warranty does not apply to damage to units from
misuse or incorrect installation/connection. Misuse includes wiring or connecting to improper polarity
power sources.
RETURN/REPAIR POLICY: Defective products may be returned to manufacturer. Any defective product that
is returned to manufacturer within 30 days of the date of purchase will be replaced free of charge. If such
a product is returned more than 30 days but less than two years from the purchase date, manufacturer will
repair the unit or, at its option, replace it, free of charge.
If the unit is repaired, new or reconditioned replacement parts may be used, at manufacturer’s option. A
unit may be replaced with a new or reconditioned unit of the same or comparable design. The repaired or
replaced unit will then be warranted under the terms of the remainder of the warranty period. The customer
is responsible for the shipping charges on all returned items. During the warranty period, manufacturer will
be responsible for the return shipping charges to the customer in the United States.
LIMITATIONS: This warranty does not cover accessories, such as charging adapters, bulbs, fuses and
batteries, damage or defects resulting from normal wear and tear (including chips, scratches, abrasions,
discoloration or fading due to usage or exposure to sunlight), accidents, damage during shipping to our
service facility, alterations, unauthorized use or repair, neglect, misuse, abuse, failure to follow instructions
for care and maintenance, fire, flood and Acts of God.
If your problem is not covered by this warranty, call our Technical Support Department at [phone]
or toll free at [phone] for general repair information and charges if applicable. You may also
contact us through our website at www.vectormfg.com.
STATE LAW RIGHTS: This warranty gives you specific legal rights. Some states do not allow limitations on
how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages,
so the exclusions or limitations stated herein may not apply. This warranty gives the purchaser specific legal
rights; other rights, which vary from state to state, may apply.
TO REQUEST WARRANTY SERVICE FOR THIS PRODUCT: Contact Technical Support by telephone, fax or
mail (see below). We suggest that you keep the original packaging in case you need to ship the unit. When
returning a product, include your name, address, phone number, dated sales receipt (or copy) and a
description of the reason for return and product serial number. After repairing or replacing the unit, we will
make every effort to return it to you within four weeks.
WARRANTY ACTIVATION: Please complete Warranty Activation Card and mail to Power On Board. Enter
“VEC551POB” as Model and “3000 Watt Power Inverter” as Product Type. All Vector products must be
registered within 30 days of purchase to activate this warranty. Mail the completed registration form, along
with a copy of the original sales receipt, to:
ATTN.: CUSTOMER SERVICE
4140 SW 30th Ave., Ft. Lauderdale, FL 33312
• TOLL FREE: (866 ) 584-5504 • FAX: [phone] •
WARRANTY IS NON-TRANSFERABLE.
BD080305
© 2005 VECTOR MANUFACTURING
MADE IN CHINA
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page ii

iv 1
TABLE OF CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Controls, Indicators and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
How This Inverter Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
The Power Inverter Output Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Protective Features of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Power Source Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Placement of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connection to 12 Volt DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connection to Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bar Graph Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Common Audio/Visual Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fault Protection Code and Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INTRODUCTION
Your new Power On Board
®
3,000 Watt Power Inverter is one in a series of
the most advanced DC to AC inverters available today. With proper care and
appropriate usage, the inverter will give you years of dependable service.
The Power Inverter supplies 3,000 watts of continuous power, in the form of four
household-type outlets that are ready to deliver 120 volt AC power whenever and
wherever you need it. The power inverter has enough power to operate almost
any household or electric appliance, including color TVs (up to 20") TV/VCR
combinations, DVD/CD players, laptop computers, camcorders, cellular phones,
power tool chargers, lamps and more.
This
MaxxSST Series Inverter is configured with the latest Soft Start Technology
(SST). Before introduction of Soft-Start, high start-up currents from large inductive
loads could shut down the inverter. Soft Start improves inverter operation. Three major
features incorporated in SST include: First, gradual voltage ramp-up during inverter
start-up. This eliminates failed cold starts under load. Second, output that momentarily
dips in voltage and quickly recovers to allow large motorized loads to start,
eliminating almost all shutdowns from momentary overloads. Last, to return to
operation, the inverter need only be turned OFF then back ON once the overload
conditions have been remedied.
This power inverter also incorporates a new cooling technology that directly benefits
our customers. The new design more efficiently cools the power transistors, and
combined with Soft Start, dramatically increases reliability and the life of the product.
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page iv

3
The Power Inverter Output Waveform
The AC output waveform of the Power Inverter is known as “modified sine wave.” It
is a waveform that has characteristics similar to the sine wave shape of utility power.
This type of waveform is suitable for most AC loads, including linear and switching
power supplies used in electronic equipment, transformers, and motors.
The modified sine wave produced by the Power Inverter has an RMS (root mean
square) voltage of 120 volts, which is the same as standard household power. Most
AC voltmeters (both digital and analog) are sensitive to the average value of the
waveform rather than the RMS value. They are calibrated for RMS voltage under the
assumption that the waveform measured will be a pure sine wave. These meters will
not read the RMS voltage of a modified sine wave correctly. They will read about 20
to 30 volts low when measuring the output of the inverter. For accurate measurement
of the output voltage of this unit, use a true RMS reading voltmeter such as a Fluke
179, Fluke 79 III, Fluke 77/99 series, Beckman 4410, or Triplett 4200.
Modified Sine Wave and Sine Wave Comparison
PROTECTIVE FEATURES OF THE INVERTER
The Power Inverter monitors the following potentially hazardous conditions:
Low Battery Voltage — This condition is not harmful to the inverter, but could damage
the power source. An alarm will sound when input voltage drops below 10.6 volts.
The Power Inverter automatically shuts down when input voltage drops below 10
volts. When the condition is corrected, the inverter can be reset by turning OFF, then
back ON.
Over Voltage Protection — The Power Inverter will automatically shutdown when the
input voltage exceeds 15.5 volts DC.
Short Circuit Protection — Reverse polarity or short circuit condition may cause
external or internal fuses to open and may cause irreversible damage to the Power
Inverter. Take extra care to ensure a proper polarity hook-up.
Overload Protection — The unit will automatically shut down when the continuous
draw exceeds 3000 watts. Reduce the load and manually reset using the inverter’s
ON/OFF Switch.
Over Temperature Protection — If the temperature inside the Power Inverter reaches
150°F, the unit will automatically shut down. Allow the unit to cool for at least 15
minutes before restarting after a heat-related shutdown. Unplug the unit while cooling.
110/120V AC
110/120V AC
12VDC to
145VDC
CONVERSION
145VDC to
120VAC
CONVERSION
Internal
Fuses
AC
Outlet
12VDC
Input
120VAC, 60Hz
to AC appliances
2
CONTROLS, INDICATORS AND CONNECTORS
Figure 1 shows the front panel of the inverter. The Power Bar Graph Display gives a
visual approximation of the output power of the unit. IT IS NOT A VOLTMETER.
AC Power is supplied through four 120 Volt AC standard North American household
outlets that can accommodate either two- or three-pin AC plugs.
The green LED indicates power and proper operation of the inverter, the red LED
indicates inverter shutdown due to a fault condition.
In addition to turning the unit ON and OFF, the ON/OFF Switch can be used to force
reset of the inverter circuits.
Figure 1 Front Panel
Figure 2 shows the back panel of the inverter, where the DC Power Connections and
high speed cooling fans are located.
Figure 2 Back Panel
HOW THIS INVERTER WORKS
The power inverter converts low voltage DC (direct current) from a battery or other
power source to standard 120 volt AC (alternating current) household power.
Principle of Operation
The inverter converts power in two stages. The first stage is a DC to DC conversion
process that raises the low voltage DC at the inverter input to 145 volts DC. The
second stage is the actual inverter stage that converts the high voltage DC current into
120 volts, 60 Hz AC current.
The DC-to-DC converter stage uses modern high frequency power conversion
techniques that have replaced the bulky transformers found in less technologically-
advanced models. The inverter stage uses advanced power MOSFET transistors in a
full bridge configuration. This ensures excellent overload capacity and the ability to
operate reactive loads, such as lamp ballasts and small induction motors.
FANS
GROUNDING
TERMINAL
POSITIVE (+)
TERMINALS
NEGATIVE (–)
TERMINALS
ON/OFF
POWER
SWITCH
GREEN POWER
LED INDICATOR
RED FAULT LED
INDICATOR
POWER
BAR GRAPH
DISPLAY
MOUNTING
BRACKETS (4) 120 VOLT
AC OUTLETS
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page 2

5
2. Connect the RED cable to the RED post marked (+) on the back of the inverter.
Connect the ring terminal to the POSITIVE terminal of the battery.
3. Connect the BLACK cable to the BLACK post marked (–) on the back of the
inverter. Connect the ring terminal to the NEGATIVE terminal of the battery.
4. The inverter has a grounding terminal. Connect an insulated #8 AWG wire to this
terminal and connect the other end of the wire to the vehicle chassis or to earth
ground to ensure proper grounding
5. Make sure that all connections between ring terminals and terminals are secure.
Direct Hardwiring to Power Source
Use #4 AWG wire if the inverter to power source connection for distances up to 3
feet. Protect the POSITIVE (+) wire from shorts by installing an ANL 500 amp fuse or
circuit breaker close to the DC power source (battery) terminal.
1. Check to be sure the inverter’s power switch is turned OFF and that no flammable
fumes are present.
2. Identify the POSITIVE (+) and NEGATIVE (–) DC power source (battery) terminals.
3. Install a fuse holder or breaker close to the POSITIVE (+) terminal of the DC source
(battery).
4. Connect a length of wire on one side of the fuse holder or circuit breaker.
Connect the other end of the wire to the POSITIVE (+) terminal of the inverter.
5. Connect a length of wire between the inverter’s NEGATIVE (–) terminal and the
DC power source NEGATIVE (–-) terminal.
6. Connect a short length of wire to the other terminal of the fuse holder or circuit
breaker. Mark it “POSITIVE” or “+”.
7. Connect the free end of the fuse or breaker wire to the POSITIVE (+) terminal of
the DC power source (battery).
8. Insert a fuse appropriate to the inverter in the fuse holder.
9. The inverter has a grounding terminal. Connect an insulated #8 AWG wire to this
terminal and connect the other end of the wire to the vehicle chassis or to earth
ground to ensure proper grounding
10. Test the inverter by turning it on and plugging in a 100 watt lamp or equipment.
11. If the inverter is not operating properly, then refer to the “Troubleshooting” section
of this manual.
CAUTIONS
•Loose connectors may cause overheated wires and melted
insulation.
• Check to make sure you have not reversed the polarity. Damage due
to reversed polarity is not covered by the warranty.
Connection To Load
The Power Inverter is equipped with four standard North American three-prong type
outlets. Plug the cord from the equipment you wish to operate into the AC receptacle.
Make sure the load requirement of your equipment does not exceed 3000 watts.
The Power Inverter is engineered to be connected directly to standard electrical and
electronic equipment in the manner described above. Do not connect the Power
Inverter to household or RV AC distribution wiring. Do not connect the Power Inverter
to any AC load circuit in which the neutral conductor is connected to ground (earth)
or to the NEGATIVE of the DC (battery) source.
4
If the low voltage alarm sounds when the battery is fully charged, follow the steps
outlined in the “Troubleshooting” section of this User’s Manual. The alarm will sound
if there is an excessive voltage drop between the battery and the inverter.
Note: It is normal for the alarm to sound while the unit is being connected to, or
disconnected from, the power source. This is not indicative of a problem.
INSTALLATION AND OPERATION
WARNING
When operating inverter, both cable sets must be connected to the
input of inverter to prevent damage to power source and inverter.
Power Source Requirements
The power source must provide a nominal voltage of 12.8 volts DC and must be able
to supply the necessary current to operate the load. The power source may be a
battery or a well-regulated DC power supply. To obtain a rough estimate of the current
(in amperes) the power source must deliver, simply divide the power consumption of
the load (in watts AC) by 10.
Example: If a load is rated at 3000 watts AC, the power source must be able to
deliver: 3000 divided by 10 = 300 amperes.
CAUTION
The Power Inverter must be connected only to batteries with a nominal
output voltage of 12 volts. The unit will not operate from a 6 volt battery
and will sustain permanent damage if connected to a 24 volt battery.
Placement of the Inverter
The inverter should be positioned on a solid, flat surface, such as the floor or a shelf.
For best operating results, the unit should be mounted (see “Mounting the Inverter”).
The inverter should only be operated in locations that meet the following criteria:
DRY – Do not allow water and/or other liquids to come into contact with the inverter.
COOL — Surrounding air temperature should be between –0°C and 40°C — ideally
between 15°C and 25°C (60-80°F). Keep the inverter away from direct sunlight,
when possible.
VENTILATED – Keep the area surrounding the inverter clear to ensure free air
circulation around the unit. Do not place items on or over the inverter during
operation. A fan is helpful if the inverter is operating at maximum power outputs for
extended periods of time. The unit will restart after it cools.
SAFE – Do not use the inverter near flammable materials or in any locations that may
accumulate flammable fumes or gases.
Mounting the Inverter
This unit is equipped with mounting brackets. Use appropriate screws or other means
to mount the inverter on a flat, solid surface as close to the battery supply as practical,
bearing in mind the recommendations in “Placement of the Inverter.” Inverters should
be mounted horizontally, not vertically.
Connection to 12 Volt DC Power Supply
Cable Connection to Power Source
Use the provided cables and connect the Power Inverter directly to the 12 volt power
source as follows:
1. Make sure the inverter power is turned OFF and that no flammable fumes are
present in the installation area.
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page 4

7
CARE AND MAINTENANCE
Storage
1. Ideal storage temperature range is 32-104°F (0-40°C).
2. Store and use the inverter in a cool, dry place with adequate ventilation.
3. Avoid locations that are exposed to heating units, radiators, direct sunlight or
excessive humidity or dampness.
Maintenance
This unit contains no user-serviceable parts. It is recommended that the unit be
returned to manufacturer for service (see the Warranty for repair/replacement policy
and contact information).
Fuse Replacement
This power inverter is equipped with multiple internal fuses. Normally, these fuses will
not blow unless there is a serious problem inside the unit. Internal fuses are
replaceable, however, only electronically knowledgeable people should attempt fuse
replacement. If the unit is damaged during fuse replacement, the warranty will be
voided. Contact Technical Support for guidance. Call toll free: [phone].
TROUBLESHOOTING
Common Audio/Visual Problems
“Buzzing” sound in audio systems
Some inexpensive stereo systems and “boom boxes” emit a buzzing sound from their
speakers when operated from the Power Inverter. This occurs because the power
supply in the electronic device does not adequately filter the modified sine wave
produced by the inverter. The only solution to this problem is to use a higher quality
sound system that incorporates a higher quality power amplified supply.
Television Interference
The Inverter is shielded to minimize interference with TV signals. However, in some
instances, some interference may still be visible, particularly with weak TV signals. Try
the following corrective measures:
• Position the inverter as far as possible from the television, the antenna and the
antenna cables. Use an extension cable, if necessary.
• Adjust the orientation of the inverter, the antenna cables and the TV power cord to
minimize interference.
• Make sure that the antenna feeding the television provides an adequate (“snow
free”) signal and that high quality, shielded antenna cable is used.
6
WARNING
Do not connect to AC distribution wiring!
CAUTION – Rechargeable Devices
Certain rechargeable devices do not operate well from a modified sine
wave inverter. They only operate properly from a standard household
outlet which provides a pure sine wave. Therefore, Vector
recommends that these types of devices be operated from a standard
household outlet only, not from the inverter.
This problem does not occur with the majority of battery-operated
devices. Most of these devices use a separate charger or transformer
that is plugged into an AC receptacle. This inverter is easily capable of
operating most chargers and transformers.
Bar Graph Display
The Power Bar Graph Display shows approximate power output of the inverter during
operation. The first bar lights when a minimum of 500 watts is connected at its output,
and the remaining bars light incrementally as power increases until all the bars are
lit. At this point, the inverter is outputting maximum power of 3000 watts.
Operating Tips
Rated Versus Actual Current Draw of Equipment
Most electrical tools, appliances and audio/video equipment have labels that
indicate the power consumption in amps or watts. Be sure the power consumption of
the item you wish to operate is rated at 3000 watts or less. (If the power consumption
is rated in amps AC, multiply by the AC volts (110) to determine the wattage).
The inverter has overload protection, so it is safe to try to operate equipment rated at
3000 watts or less. The inverter will shut down if it is overloaded.
Resistive loads are the easiest for the inverter to operate. However, large resistive
loads, such as electric stoves or heaters usually require more wattage than this inverter
can deliver on a continuous basis. Inductive loads, such as TVs and stereos require
more current to operate than do resistive loads of the same wattage rating.
Induction motors, as well as some televisions, may require two to six times their
wattage rating to start up. The most demanding in this category are those that start
under load, such as compressors and pumps.
Testing is the only definitive way to determine whether a specific load can be started
and how long it can run.
The inverter draws 0.5 ampere from the battery when it is not supplying power to a
load and ON/OFF Switch is in the ON position. In most instances, the inverter can
be left connected to the battery when not in use since it draws so little current.
However, if the vehicle is to remain unused for several days, disconnect the inverter
from the battery.
CAUTION
This inverter will not operate high wattage appliances or equipment
that produces heat, such as hair dryers, microwave ovens or toasters.
VEC551POB_Manual_080305.QXD 8/4/05 11:09 AM Page 6