TS 910 TRANSFER SWITCH
PM140 REV 0 12/02/09 4 Thomson Technology
3.4.4. Control Wiring
All control wiring for engine start, load shed, alarm and remote test must be installed
in separate conduits from all power cabling and must utilize suitably sized conduits
per NEC requirements. All control wiring shall be sized for minimum #14 AWG.
Control wiring type and voltage rating must also comply with NEC requirements and
local jurisdictions having authority.
3.4.5. Generator Set Automatic Operation
The TS 910 transfer switch operates in conjunction with any generator set with
remote automatic starting capabilities utilizing a 2 wire, remote start control contact
input. A dry contact is provided for remote generator starting control (contact closes
to start generator and opens to stop generator). Refer to Section 18.6.1.1 Customer
Interface Control Terminal Block of this manual for further details.
3.4.6. Upstream Overcurrent Protection (Non-Service Entrance Rated TS
910)
Non-Service Entrance Rated TS 910 transfer switch models do not contain any
integral over current protection and require upstream over current protection devices
for both Utility and Generator sources. The standard TS 910 is rated for 100%
continuous loading of all load types. Refer to Section 17 REQUIREMENTS FOR
UPSTREAM CIRCUIT PROTECTIVE DEVICES of this manual for further details.
3.4.7. Upstream Overcurrent Protection (Service Entrance Rated TS 910)
Service Entrance rated TS 910 transfer switch models contain integral over current
protection for the Utility source as standard. Service Entrance rated TS 910 transfer
switches do not contain any integral over current protection for the generator source
and requires upstream generator source over current protection. The Service
Entrance rated TS 910 is rated for 80% maximum continuous loading of all load
types. Refer to Section 17 REQUIREMENTS FOR UPSTREAM CIRCUIT
PROTECTIVE DEVICES of this manual for further details.
3.4.8. Withstand/Interrupting Current Ratings
Non-Service Entrance Rated TS 910 can withstand a maximum short circuit fault
current of 10kA (RMS, Symmetrical) @240V (100A and 200A Models) and 25kA
@240V 400A models when used with specific type/model of upstream circuit breaker.
Service Entrance rated TS 910 can interrupt a maximum short circuit fault on the
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