Install Manual

General Information
Automatic Transfer Switch Owner’s Manual 5
Section 2: General Information
Applications
The PWRcell Automatic Transfer Switch (ATS) can be
utilized with a PWRcell Energy Storage System (ESS)
alone, or in conjunction with a Generator.
When used with a PWRcell ESS alone, it enables the
entire home to be powered from the ESS, within the limits
of it’s power capacity. To ensure your PWRCell is
protected from being overloaded, see section, Load
Management Options.
PWRcell ATS Controller also enables other advanced
applications not covered in this manual. For more
information, and to access the most up to date version of
this owner's manual, visit http://www.generac.com/
service-support/owner-support.
Unpacking
Carefully unpack the transfer switch. Inspect closely for
any damage that might have occurred during shipment.
The purchaser must file with the carrier any claims for
loss or damage incurred while in transit.
Check that all packing material is completely removed
from the switch prior to installation.
The kit should include:
• Manual Operating Handle
• Storage Bracket for Manual Operating Handle
• Fault Current Label
Equipment Description
This automatic transfer switch is used for transferring
electrical load from a utility (normal) power source to a
ESS (standby) power source.
Transfer of electrical loads occurs automatically when the
utility power source has failed or is substantially reduced
and the ESS is ready to power the home.
The transfer switch prevents electrical feedback between
two different power sources (such as the utility and ESS
sources) and, for that reason, codes require it in all
standby electric system installations.
The transfer switch consists of a transfer mechanism,
utility service disconnect circuit breaker (if equipped), and
a PWRcell ATS Controller for inverter connections and
management of HVAC loads.
Transfer Switch Mechanism
See Figure 2-1. This switch is used with a single-phase
system when the single-phase neutral line is to be
connected to a neutral lug and is not to be switched.
Solderless, screw-type terminal lugs are standard.
The conductor size range is as follows:
This transfer switch is suitable for control of motors, electric
discharge lamps, tungsten filament and electric heating
equipment where the sum of motor full load ampere ratings
and the ampere ratings of other loads do not exceed the
ampere rating of the switch and the tungsten load does not
exceed 30 percent of the switch rating.
This UL listed transfer switch is for use in optional
standby systems only (NEC article 702).
A 100A rated switch is suitable for use on circuits capable
of delivering not more than 10,000 RMS symmetrical
amperes, 250 VAC maximum, when protected by a 100A
maximum circuit breaker (Siemens types QP or BQ) or
100A maximum circuit breaker (Square D Q2,
Westinghouse CA-CAH, General Electric TQ2 and
Siemens QJ2).
A 200A rated switch is suitable for use on a circuit
capable of 22,000 RMS symmetrical amperes, 240 VAC
when protected by a circuit breaker without an adjustable
short time response or by fuses.
Figure 2-1. Typical Single-Phase ATS Transfer
Mechanism
Switch
Rating
Wire Range
Conductor
Tightening Torque
100A #14-1/0 AWG (Cu/Al) 50 in-lbs (5.6 Nm)
200A #6-250 MCM (Cu/Al) 275 in-lbs (31 Nm)
A Utility Closing Coil
B Standby Closing Coil
C Utility Lugs (N1 & N2)
D Standby Source Lugs (E1 & E2)
E Load Lugs (T1 & T2)
000219
A
B
C
D
E