Guardian 4389 Repair Manual page 13

GENERAL INFORMATION
POWER SOURCE AND LOAD LINES
The utility power supply lines, the standby (generator)
supply lines, and electrical load lines must all be con-
nected to the proper terminal lugs in the transfer
switch. The following rules apply:In 1-phase systems
with a 2-pole transfer switch, connect the two utility
source hot lines to Transfer Switch Terminal Lugs N1
and N2. Connect the standby source hot lines (E1,
E2) to Transfer Switch Terminal Lugs E1 and E2.
Connect the load lines from Transfer Switch Terminal
Lugs T1 and T2 to the electrical load circuit. Connect
UTILITY, STANDBY and LOAD neutral lines to the
neutral block in the transfer switch.
PART 1
Figure 2. Proper Fuel Installation
PREPACKAGED INSTALLATION BASICS
SYSTEM CONTROL INTERCONNECTIONS
Prepackaged home standby generators are equipped
with a terminal board identified with the following ter-
minals: (a) UTILITY 1, (b) UTILITY 2, (c) 23, and (d)
194. Prepackaged load centers house an identically
marked terminal board. When these four terminals
are properly interconnected, dropout of utility source
voltage below a preset value will result in automatic
generator startup and transfer of electrical loads to
the "Standby" source. On restoration of utility source
voltage above a preset value will result in retransfer
back to that source and generator shutdown.
SECTION 1.2
Page 11