Product Manual

12 Milbank Manual Transfer Switch Owner’s and Installation Manual
OPERATION & INSTALLATION
The installation of the MMTS shall conform to
national and local electrical codes and should only be
performed by a licensed electrician.
Each installation of a manual transfer switch is unique
and as such it is not possible for this manual to cover
every conguration and procedure necessary to complete the
installation; neither can potential hazards and/or the result of
each method or procedure be anticipated in this manual. See
Figure 2 for a typical install.
The MMTS is installed between the Main Distribution Panel/
Load Center, portable generator and the selected loads through
conduit. The selected loads must be connected to the proper
size circuit breaker for each load per electrical code. The
portable generator is connected to the MMTS through the 30
It is recommended to install the manual transfer switch
next to the Main , either inside or outside of the house.
AMP or 50 AMP Inlet depending on the size of generator used.
The inlet may be located outside in the optional inlet box that is
hardwired to the MTS. Selected loads that are to be powered
by the portable generator must not exceed the capacity of
the generator to prevent unwanted stalls. The homeowner is
responsible for manually controlling the selected loads that
are attached to the portable generator to obtain the desired
operation.
During installation the installer should check that the load of the
selected circuits are balanced on each phase of the generator to
achieve optimum generator performance. When on generator
power the home owner must monitor the loads to prevent
stalling the generator due to an overload.
Changes to existing electrical service should be nalized
and approved by the local regulatory agencies before
installation begins. Install the MMTS as a subpanel to the
Main Circuit Breaker Panel and move the selected house
loads to the MMTS subpanel. The portable generator
may be directly connected to the MMTS or through an
optional inlet box.
If the optional inlet box is used then the inlet
opening on the MMTS must be sealed with
the inlet cover to prevent potential shock. The
inlet box wiring must be the proper size and
supported by appropriate conduit or raceways.
All wiring and conduit sizes and types should
be in accordance with federal, state and local
codes, standards and regulations.
!
Figure 2 – Typical install with optional external inlet
Optional
Inlet box
Portable Generator
Please read before beginning installation of MMTS:
1. Ensure that you have access to a lighting source that is powered independently of the utility service.
2. Turn off main utility breaker
Even with the main power switch turned off the
wires on the utility side of the breaker contain live
voltage and contact with them can cause serious
injury or death.
3. The transfer switch circuit breakers must be connected
only to branch circuit breakers of the same size and
conguration in the load center.
• Connecting to the too small of a breaker can
cause poor performance
• Connecting to too large of a breaker could
result in exceeding the ampacity rating of the
wiring and create a dangerous or an unsafe
condition.
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