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Electrical 2-9
Section 2: Electrical
Electrical Systems Management
Care must be given in deciding what equipment should be installed into a vehicle given the power
demands of the equipment and the power available from the vehicle. A power load strategy should
be developed to minimize the risk of running out of power. Examine the proposed equipment for
vehicle installation. Add up the current requirements. If the current requirements exceed what the
vehicle can reasonably be expected to be able to provide, the battery will begin discharging to
provide the power to the equipment that the generator is unable to provide. After some period of
time, the vehicle will shut off as the battery voltage decreases to a level that cannot sustain
vehicle operation.
There are alternatives that can be considered to minimize system electrical overload. Consider
the current requirements of equipment before it is purchased and installed. Modern light bars and
radios use a fraction of the current than units made as recently as 1996. As the light bar is the
most power intensive unit installed on most vehicles, considerable attention should be given to its
current requirements. Changes in driver habits can make a difference as well. When a vehicle is
sitting and no one is in the car, the air conditioner can be turned off until the driver is ready to get
back into the vehicle. The air conditioner is among the largest current user of OEM equipment.
As such, it can impact available power for other uses as well.
Generator Output
The Escape/Mariner Hybrid generator is different from that used on the standard Escape/Mariner.
The Escape/Mariner Hybrid has a 110-amp generator.
Vehicle Component Electrical Loads
Vehicle component electrical loads are shown in the table below. Not all features are powered all
the time, so actual vehicle loads on the power supply system will vary.
Note: Smart junction box (SJB) fuse 1 (30A), circuit SBP04 (GN/RD) for the DC/AC power
inverter is at maximum available current limit when the power inverter is installed and used.
Do not splice into this fused circuit when the DC/AC power inverter is installed and used.
Note: SJB fuse 18 (20A), circuit SBP18 (YE/RD) for the heated seats is at maximum available
current limit when the heated seats option is installed and used. Do not splice into this
fused circuit when the heated seats option is installed and used.
Note: If the heated seat connectors are disconnected, DTCs will set in the electronic automatic
temperature control (EATC) module.
Component Amps
Base
Miscellaneous Base Loads 36.1
Cooling
Cooling Fan (variable speed) 24.0
Climate Control
(Continued)
2010 Escape Hybrid, Mariner Hybrid Modifiers Guide, 07/2009