Generac Power Systems 004920-0 Owner's Manual page 7

1.7.1 2-POLE MECHANISMS
These switches (Figure 1.1) are used with a single-
phase electrical system, when the single-phase NEU-
TRAL line is to be connected to Neutral Lug and is
not to be switched.
Figure 1.1 — 200 Amp, 2-pole Transfer
Mechanism
MANUAL
HANDLE
INLET
TRANSFER SWITCH
RATED CURRENT
200 AMP
RATED VOLTAGE
480 VAC UL
600 VAC CSA
CHANGE
XXXXXX
OVER
DISPLAY
0C8884
A1 B2 T1 T2
OPER. CIR.
TERMINALS
"B" POWER SOURCE
LOAD SIDE OF SWITCH
Solderless, screw-type terminal lugs are standard.
Conductor sizes must be adequate to handle the max-
imum current to which they will be subjected. The
installation must comply fully with all applicable
codes, standards and regulations.
44 33 22 11
ALTERNATOR
"A" POWER SOURCE
AUXILIARY
SWITCH
UTILITY
A
/NORMAL
N1
SUPPLY
ON
N2
UTILITY
* *
B
STANDBY
OFF
SUPPLY
E1
STANDBY
E2
CUSTOMER
T1 LOAD
T2
Figure 1.2 — Transfer Switch Interconnections (20818-B)
NC C
RY1
44
33
22
CONTROL
11
2
6
1
4
14 14 85 13 56 56 0
2 6 1 4 14 14 85 13 56 56 0
ENGINE
Section 1 - General Information
Generac Liquid-cooled 20 kW Generator
Before connecting wiring cable to terminals, remove
any surface oxides from the cable ends with a wire
brush. If ALUMINUM conductors are used, apply
joint compound to conductors. After tightening the
terminal lugs, carefully wipe away any excess joint
compound.
All power cables should enter the switch next to the
transfer mechanism terminals. Standard terminal
lugs on the transfer mechanism are solderless,
screw-type.
Connect power source and load conductors to clear-
ly marked transfer mechanism terminal lugs as fol-
lows (Figure 1.2):
1. Connect NORMAL (UTILITY) power source cables
to switch terminals N1, N2.
2. Connect customer LOAD leads to switch termi-
nals T1, T2.
Conductors must be properly supported, of approved
insulative qualities, protected by approved conduit,
and of the correct wire gauge size in accordance with
applicable codes.
Tighten terminal lugs to the following torque values
as noted inside the transfer switch door.
Be sure to maintain proper electrical 1/2-inch clear-
ance between live metal parts and grounded metal.
NO NC C NO
E1
RY4
00
E2
N1
PANEL
N2
T1
T2
00
23
194
0 85 49
0 85 49
ENGINE
HEATER
CUSTOMER CONNECTION
E1 N1
UTILITY SUPPLY
00 00
(MAX 100A FOR 0752+0754)
E2 N2 (MAX 200A FOR 0753+0755)
AUTOMATIC
N1
TRANSFER
N2
SWITCH
T1
(MOUNTED IN
T2 GENERATOR
ENCLOSURE)
00 T1 CUSTOMER
23 00 LOAD
194 T2 CONNECTION
E
Generac ® Power Systems, Inc. 5