Prudent Way 400 Watt DC-AC Power Inverter User’s Manual
Model: PWI-IV400
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Caution! The output of this Power Inverter is non-sinusoidal. Therefore, do not use this Power Inverter with small
battery-operated products such as rechargeable flashlights, some rechargeable shavers, and night-lights that are plugged
directly into an AC receptacle to recharge. Do not use this Inverter with some chargers for nickel-cadmium battery used
in powered-hand tools. These chargers display warning labels stating that dangerous voltages are present at the
charger’s battery terminals.
Caution! This Power Inverter is designed for use with devices with a power rating of less than 400 watts and starting
surge power of less than 1200 watts. The continuous power rating is 375 watts. Please confirm the wattage requirement
for your device before using. Failure to follow this instruction may result in damage to the Power Inverter or the
electronic devices.
5.
Special Recommendations
1)
In order to avoid deep discharging your vehicle’s battery, we recommend you
start the vehicle engine for 10-20 minutes after 1-2 hours of operating the
Power Inverter. Please turn off the switch on the Power Inverter when you
start the vehicle.
2)
Be sure to disconnect the Power Inverter prior to use a battery charger to
charge your battery. Failure to disconnect the Power Inverter first will lead to
an input surge which will damage the Power Inverter.
3)
Use only the cable included to connect the Power Inverter and the battery.
Any source of extension such as adding extension cord will result in a
reduction of efficiency and output and may hurt your Power Inverter and
electronic device.
4)
Use only extension cord between the AC output and the AC device should the
extension is needed. Make sure you use a high quality extension cord with
length no longer than 100 ft. Longer extension cord will reduce AC output.
6.
Measuring the AC voltage
The maximum power that this Power Inverter can supply by plugging into the
cigarette lighter is approximately 10 times of the lower rating fuse. For example, if
the fuse protecting the lighter circuit inside the vehicle cigarette plug is 10 amps and
the fuse inside the cigarette plug of the cable is 15 amps, the lower rating of 10 amps
determines the maximum voltage. In this scenario, the maximum power available
from the Power Inverter will be approximately 100 (10x10) watts.
The output waveform of this Power Inverter is a modified sine wave. To measure the
AC output voltage correctly, you need to use a true RMS volt meter. Using any other
type of voltage measuring device will result in an inaccurate AC voltage reading.
