General Information
6 Automatic Transfer Switch Owner’s Manual
Load Center Circuit Breakers
This switch is listed for use with the following one inch
breakers:
NOTE: For branch circuits and feeders over 50 amps,
only listed Siemens or Murray circuit breakers shall be
used.
Service Disconnect Breaker and Terminal Ratings
Transfer Switch Data Decal
A data decal is permanently affixed to the transfer switch
enclosure. Use this transfer switch only with the specific
limits shown on the data decal and on other decals and
labels that may be affixed to the switch. This will prevent
damage to equipment and property.
When requesting information or ordering parts for this
equipment, make sure to include all information from the
data decal.
For future reference, record the Model and Serial
numbers in the space provided on the front cover of this
manual
Transfer Switch Enclosure
The standard switch enclosure is a National Electrical
Manufacturer’s Association (NEMA) and UL Type 1,
intended for indoor installation only.
Safe Use of Transfer Switch
Before installing, operating or servicing this equipment,
read the Safety Rules carefully. Comply strictly with all
Safety Rules to prevent accidents and/or damage to the
equipment. The manufacturer recommends that a copy
of the Safety Rules be posted near the transfer switch.
Also, be sure to read all instructions and information
found on tags, labels and decals affixed to the
equipment.
Three publications that outline the safe use of transfer
switches are the following:
• NFPA 70; National Electrical Code
• UL 1008; STANDARD FOR SAFETY-AUTOMATIC
TRANSFER SWITCHES
• UL 67; Panelboards Marking and Application Guide
NOTE: It is essential to use the latest version of any
standard to ensure correct and current information.
Load Management Options
Load management systems are designed to work
together to prevent a generator from being overloaded by
large appliance loads. A Smart A/C Module (SACM) is
standard in these switches. An optional Smart
Management Module (SMM) is also available.
Manufacturer SCCR Amperage Rating
Siemens
22 kA (200A)
10 kA (100A)
Murray
Eaton
10 kA (100A and 200A)
including GFCI, AFCI and
tandem breakers up to 50 amps
Square D Homeline
Breaker Specification
Description Siemens MBK-100A Type EQ8681
or MBK-200A Type EQ8695
2-pole, Single Phase
Voltage / Amp
Rating
120/240 VAC, 100A or 200A
(80% Continuous Current Rated)
Frequency 60 Hertz
100 Amp Utility Service and
Disconnect Breakers
Tightening Torque
Utility
Connection
#4 - #3/0 AWG
(Cu/Al)
55 in-lbs. (6.2 Nm)
Generator / Load
Connection
#14 - 1/0 (Cu/Al) 50 in-lbs. (5.6 Nm)
Neutral / Ground
Bars
10-14 Cu/10-12 Al 20 in-lbs. (2.3 Nm)
8 AWG 25 in-lbs. (2.8 Nm)
6-4 AWG 35 in-lbs. (4.0 Nm)
Ground
Conductors Only
(2) or (3) 14 AWG 20 in-lbs. (2.3 Nm)
(2) 12-10 AWG 20 in-lbs. (2.3 Nm)
Control Wiring 11 in-lbs. (1.2 Nm)
200 Amp Utility Service and
Disconnect Breakers
Tightening Torque
Utility
Connection
#1 - 300MCM(Cu/Al) 250 in-lbs.
(28.2 Nm)
Generator / Load
Connection
#6 - 250MCM (Cu/Al) 275 in-lbs.
(31.0 Nm)
Neutral #4 - 2/0 40–50 in-lbs.
(4.5–5.6 Nm)
Ground (2) or (3) 14 AWG 20 in-lbs. (2.3 Nm)
(2) 12-10 AWG 20 in-lbs. (2.3 Nm)
Control Wiring 11 in-lbs. (1.2 Nm)
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
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