O & M Manual – Insulated Case ATS Rev: October 2020
Publication Number:
MN0100700E
Version: V10.01.20
Page 12
Before bringing the power cables to the enclosure, be certain that the lugs will be of the correct
size. If not, different sizes may be ordered from Lake Shore Electric.
1.
Lug size and arrangements may vary depending on molded case switch manufacturer.
2.
Optional lug arrangements are available but must be specified at the time the transfer
switch is ordered. Consult Lake Shore Electric for details.
When mounting an "Open" style transfer switch, there are certain steps which should be followed:
1.
Allow adequate space for movement of the manual-operating handle.
2.
Mount to a rigid framework to minimize vibration.
3.
Review all electrical clearances with the enclosure door or panels closed.
4.
On rear connected switches, ensure there is no strain on the studs due to improper
alignment.
Table 3 – Automatic Transfer Switch Nomenclature
Nomenclature
Names
Definition
ATS
Automatic Transfer Switch
NS (S1)
"S1" Normal Source Molded Case Switch or Breaker
NL1
"S1" Normal Source – Phase A or Line 1 Cables Connection Location
NL2
"S1" Normal Source – Phase B or Line 2 Cables Connection Location
NL3
"S1" Normal Source – Phase C or Line 3 Cables Connection Location
ES (S2)
"S2" Emergency Source Molded Case Switch or Breaker
EL1
"S2" Emergency Source – Phase A or Line 1 Cables Connection Location
EL2
"S2" Emergency Source – Phase B or Line 2 Cables Connection Location
EL3
"S2" Emergency Source – Phase C or Line 3 Cables Connection Location
LOAD
Load Connections
L1
Load Output – Phase A or Line 1 Cables Connection Location
L2
Load Output – Phase B or Line 2 Cables Connection Location
L3
Load Output – Phase C or Line 3 Cables Connection Location
NE
Neutral Cables Connection Location
GND
Ground Cables Connection Location
