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Appendix A: Generator Auto Start Requirements and Types
Recommended Features
In order for the generator to be automatically started by the AGS, it must
include electric start and an automatic choke. An automatic primer system
may also be required on natural gas and propane powered generators. The
generator should also include remote start ability with accessible remote
start terminals or a connector. Protective systems for low oil pressure, over
temperature, starter lockout and over crank control are valuable features
that will prevent generator damage and increase system reliability. “Two-
wire” start generators are highly recommended because of the greater
simplicity for automatic starting and because they are intended for remote/
automatic/unattended operation.
Generator Starting Types
The AGS supports three major generator starting types:
• Two wire
• Three-wire “Onan”
• Three-wire automotive
NOTE:
The terms “two-wire” and “three-wire” refer only to the minimum
number of wires necessary to start the generator. Actual installations will
require additional wires to connect to the generator, including the generator
run signal (switched B+) wiring, and wiring to an optional external ON/OFF
switch. For installation wiring diagrams, see page 15 to page 28.
NOTE: For overcurrent protection guidelines that apply to the wiring types
discussed in this appendix, see page 11.
