8
Instruction Booklet
IB0162063EN
Effective January 2014
O & M Manual for the EGS Metered, Service
Entrance Automatic Transfer Switch with Relay Control
Eaton Corporation www.eatoncanada.ca
4.5 Generator & Load Power Cable Connection
Warning
POWEr COnDUCTOrS MaY HaVE VOLTagE PrESEnT THaT Can CaUSE
SEVErE PErSOnaL inJUrY Or DEaTH. DE-EnErgiZE aLL POWEr
Or COnTrOL CirCUiT COnDUCTOrS TO BE COnnECTED TO THE aTS
EQUiPMEnT BEFOrE BEginning TO WOrK WiTH THE COnDUCTOrS anD/
Or TErMinaTing THEM TO THE EQUiPMEnT
CaUTiOn
TO HELP PrEVEnT COMPOnEnT DaMagE Or FUTUrE MaLFUnCTiOnS,
USE EXTrEME CarE TO KEEP COnTaMinanTS OUT OF THE aTS
EQUiPMEnT WHEn MaKing THE POWEr CaBLE COnnECTiOnS.
Test all power cables prior to connection to the unit to ensure that
the conductors or cable insulation has not been damaged while
being pulled into position.
Power cables are to be connected to solderless, screw type lugs
located on the contactor assembly. Verify that the lugs supplied will
accommodate the power cables being used. Also verify that the
cables comply with all local electrical codes. Standard ATS equip-
ment, as supplied from the factory, will accommodate the wire sizes
shown in Table 3.
Table 3. Wire Sizes for ATSs.
Transfer Switch
amp rating
Contactor Lug
Size range
number of Cables
per Phase
100
#14 - 1/0 AWG
1
200
#4 AWG - 300 MCM
1
CaUTiOn
iMPrOPEr POWEr CaBLE COnnECTiOnS Can CaUSE EXCESSiVE HEaT
anD SUBSEQUEnT EQUiPMEnT FaiLUrE.
ote:
N
Tighten the cable lugs to the torque identified on the label
affixed to the unit’s door.
Connect cables as follows (see Figure 10, and Table 3):
•
The generator power cables to the generator lugs on the contac-
tor assembly.
•
The load power cables to the load lugs on the contactor assem-
bly.
•
The generator neutral cable to the generator neutral lug on the
neutral bar assembly.
•
The load neutral cable to the load neutral lug on the neutral bar
asssembly.
•
The generator and load ground cable to the generator and load
ground lugs on the ground bar assembly.
Warning
FaiLUrE TO PrOPErLY COnnECT THiS TranSFEr SWiTCH PEr nFPa 70,
THE naTiOnaL ELECTriC CODE, MaY rESULT in PrODUCT FaiLUrE, FirE,
LOSS OF PrOPErTY, LOSS OF LiFE, ETC.
Figure 9. Generator & Load Power Cable Connection Locations.
4.6 Wiring
Warning
POWEr COnDUCTOrS anD COnTrOL Wiring MaY HaVE VOLTagE
PrESEnT THaT Can CaUSE SEVErE PErSOnaL inJUrY Or DEaTH.
DE-EnErgiZE aLL POWEr Or COnTrOL CirCUiT COnDUCTOrS BEFOrE
BEginning TO PErFOrM anY Wiring aCTiViTY TO Or WiTHin THE aTS
EQUiPMEnT.
CaUTiOn
CHECK THE aTS EQUiPMEnT naMEPLaTE FOr raTED VOLTagE. iT
SHOULD BE THE SaME aS THE UTiLiTY anD gEnEraTOr LinE VOLTagES.
OPEraTing THE EQUiPMEnT On iMPrOPEr VOLTagE Can CaUSE
EQUiPMEnT DaMagE.
Generator
& Load
Neutral
Generator
& Load
Hots
