Distribution - Beechcraft Baron G58 Pilot Operating Handbook

Section 7
Model G58 Systems Description
response to short circuits. Current limiters are not re-settable
and are not available to the pilot.

DISTRIBUTION

The airplane electrical system consists of two, normally inde-
pendent, electrical systems. The left system consists of the left
battery and left alternator which power the LEFT BUS and
associated smaller buses. The right system consists of the
right battery and right alternator which power the RIGHT BUS
and associated smaller buses. In general, if an airplane sys-
tem has a left and right component, the left component will be
powered by the left electrical system (LEFT BUS) and the right
component will be powered by the right electrical system
(RIGHT BUS). The LEFT and RIGHT Bus each power three
smaller buses through current limiters as shown in the sche-
matic diagram. These three smaller buses are entitled AVION-
ICS CB PNL, L CB PANEL, and PILOT SUBPANEL on the
Electrical Schematic Diagram. The bus titles denote the loca-
tion in the cockpit where the associated protection device is
located; the Avionics Circuit Breaker Panel, the Left Circuit
Breaker Panel, and the circuit-breaker-type switches located
on the Pilot's Instrument Subpanel. The LEFT and RIGHT AVI-
ONICS / ELECTRICAL EQUIPMENT BUS CONNECTION
tables show the location of each piece of electrically powered
equipment in relation to the two electrical systems (LEFT BUS
or RIGHT BUS). In addition to the above noted buses, a Hot
Battery Bus (HOT BAT BUS) is powered by the Right Battery.
This bus provides power to the courtesy lights, ELT transmit
light, and the clock. Circuit protection devices for these items
are not available to the pilot.
The Left and Right electrical systems may be manually tied
together through the Bus Tie Relay if either alternator should
become inoperative or during ground operations when an
external power source is used. The Bus Tie Relay is closed by
placing either alternator switch to the BUS TIE position. For
example, in the event of a left alternator failure, power from the
right alternator may be applied to the left bus through the Bus
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