Van's Aircraft RV-12 Pilot Operating Handbook page 21

Revision:6
GENERATOR/ELECTRICAL FAILURE
Electrical fuel pump operation depends upon sufficient
battery power. Monitor the fuel pressure provided by the
mechanical engine driven pump if the electrical pump has
been shut off using the master switch or fuel pump fuse.
Stabilator trim operation depends on battery power.
LOW VOLTAGE/DISCHARGE
A generator failure is indicated by a steady discharge on the
ammeter and voltage indication less than 12.0 volts.

Non-Essential Electrical Equipment - OFF

Avionics Switch – OFF (the EFIS and GPS will continue to
operate on the EFIS backup battery)

Land as soon as possible as the battery and EFIS backup
battery will furnish electrical power for a limited time only.
A voltage in excess of 15 volts indicates a runaway generator.

Master - OFF

30A Main Bus Fuse – PULL-REMOVE immediately

Non-Essential Electrical Equipment - OFF

Avionics Switch – OFF (the EFIS and GPS will continue to
operate on the EFIS backup battery)

Land as soon as possible as the battery will furnish electrical
power for a limited time only.
RV-12 PILOT'S OPERATING HANDBOOK
WARNING
HIGH VOLTAGE
Date: 04/06/18
D-180 3-5