SJE Electrical Installations
Manual Transfer Switch Installation for a
Generator:
The transfer or changeover switch is fitted between mains input to your
distribution (fuse / consumer unit) board. The meter tails supplying power to
your board are redirected via the transfer switch.
Briggs & Stratton BST9200M* Transfer Switch
Supplied and installed from £465.00
The switch has a 3-position function; Generator Supply - Off - Mains Supply
The switch is normally left in the Mains Supply position and power from your
utility company is maintained.
Further wiring is needed from the transfer switch to an inlet connector, this is
simply a male socket which is usually fitted on an outside wall. (if a
permanently fixed generator the inlet connector may not be needed)
The switch can be installed prior to buying / renting a generator.
The transfer switch is rated at either 100 or 80 amps for utility supply so the
normal power is unaffected. When under generator supply the power is limited to
35 amps or thereabouts. In the event of a power cut this is adequate for most
domestic / small business situations for emergency backup.
When you have a generator, you simply plug the generator into the inlet
connector. Start the generator. Then turn the transfer switch to Generator
Supply, power is then restored.
Suitable leads can be provided to connect the genset to the inlet connector.
When normal power is restored, turn the transfer switch to Mains Supply, stop
the generator, then unplug the lead and store in a dry place.
For safety reasons, it is important to follow the sequences given.
If you have space, it is more convenient to have the generator set in a fixed
position, then the genset can be left permanently connected.
A transfer switch can also be used to power dedicated circuits only, rather than
a full installation; however this would mean alterations to your existing
distribution board set-up.
