3
USE OF EQUIPMENT
Usually electrical tools, appliances and audio/video equipment have a label indicating the
power consumption in amps or watts. Add up the power consumption in those items you will
be using simultaneously, keeping that total below 150watts. If the power consumption is rated
in amps multiply by the AC volts (120v) to determine the wattage. For example, a radio rated
at 0.26amps will use 31watts, well within the limits of what the car power point can handle on
a continuous basis.
Resistive loads, such as incandescent lights are the easiest for the INVERTER to drive, though
larger resistive loads, such electrical stoves or heaters, require more power than the
INVERTER can deliver continuously. Inductive loads, such as TV’s and stereos (any device with
a coil transformer in it) require more current to operate than a resistive load of the same
power rating . induction motors (motors without brushes), as well as some televisions , may
require 2 to 6 times their power rating to start up. This condition may require repeated
“ON/OFF, ON/OFF, ON/OFF” switching of the power switch on the car power point in order to
get them started. The most demanding are those that start under load, i.e compressors and
pumps. Since motor and television characteristics vary widely, only experimentation will
determine if a specific load can be started and for how long it can be operated.
IMPORTANT:
The car power inverter will not operate most appliances designed to produce
heat, such as hair dryers, coffee makers, irons, heaters and toasters. The power use of most
of these exceeds 1000 watts far beyond the capacity of this unit. This unit may be used either
whilst the engine is running or turned off. Please not however it may not operate while the
engine is being started, since the battery voltage can drop less than 0.4 ampere from the
battery when it is not supplying power to the load. In most cases, the INVERTER may be left
connected to the battery when it is not in use, since it draws so little current. If the vehicle will
not be used for several days disconnect the car power inverter from the cigarette lighter.
WARNING ALARMS
Low battery:
An alarm will sound when the voltage of the battery drops 11 volts. This
indicates that the battery requires recharging. Operations should be stopped at this time, as
the car power inverter will shut down automatically when the battery voltage drops to 10.0
volts. If the low battery alarm sounds when the battery is fully charged, follow the steps for
correcting the lack of output power in the troubleshooting guide.
Overload:
The alarm will sound if the car power inverter is overloaded, or if there is an
excessive voltage drop between the battery and the car power inverter. NOTE: The alarm may
sound momentarily when the unit is being connected to, or disconnected from, the power
source. This is normal and does not indicate a problem.
High temperature:
The alarm will sound if the temperature inside the car power inverter
gets too hot and the INVERTER will stop working.
Battery operation:
Typically a vehicle battery has a minimum operating time of 1 to 2 hours,
depending on the current use of the load being driven. We recommend that the operator start
the vehicle every hour to recharge the battery system to prevent unexpected shut downs of
equipment, it will also ensure that there is deficient battery capacity to start the engine.
Short circuit
– Reverse polarity or short circuit condition of the load will usually result in the
operation of the short circuit protection. Immediately disconnect the shorted load and contact
the helpline for instructions.
Summary of Contents for EVG-150-12-120V-M
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