Power Source And Load Lines; System Control Interconnections - Guardian 5240 Diagnostic Repair Manual

GENERAL INFORMATION

POWER SOURCE AND LOAD LINES

The utility power supply lines, the standby (genera-
tor) supply lines, and electrical load lines must all be
connected 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
SAFETY
SHUT OFF
VALVE
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.
5-7" WC REGULATOR
TO HOUSEHOLD
GAS METER CAPABLE
OF PROVIDING FUEL
FLOW OF:
0000001
SECTION 1.2
119,000 (6/7KW)
}
156,000 (9/10KW)
BTU/HOUR
220,000 (13kW)
245,000 (15/16KW)
+HOUSEHOLD APPLIANCES
(BASED ON 1000 BTU/CU FT)
GAS MAIN
2-5 PSI
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