Cobra Electronics CPI 850 - Manual (Page 8)

3. Connect cable to the power source:
a. Connect the cable from the Negative (Black)
Terminal of inverter to the Negative Terminal of
the power source. Make a secure connection.
b. Connect the cable from the Positive (Red) Terminal
of the inverter to the Positive Terminal of the power
source (the battery’s main fuse or the battery selector
switch, if you are using one). Make a secure connection.
You might observe a spark when you make this connection
since current can flow to charge capacitors in the inverter.
All power connections to your Cobra inverter must
be Positive to Positive and Negative to Negative.
CAUTION Do not connect the inverter and another
AC source (such as a generator or utility power)
to the AC wiring at the same time. The inverter
will be damaged if its output is connected to
AC voltage from another source. Damage can
even occur if the inverter is switched off.
CAUTION Do not connect the inverter to an AC
11 Nothing comes close to a Cobra ® 10 English
branch circuit that has high-power consumption loads.
It will not operate electric heaters, air conditioners,
stoves, and other electrical appliances that consume
more than 800 watts.
CAUTION Loose connectors result in excessive
voltage drop and may cause over heated wires
and melted insulation.
Power Consumption
Installation
Power On and Off
Operation
Laptop
50 watts x 2 hours
= 100 watt-hours
TV/VCR (up to 25")
115 watts x 3 hours
= 345 watt-hours
Blender
300 watts x 15 minutes
= 75 watt-hours
On/Off Switch to On
On/Off Switch to Off