While purchasing a generator, consumers usually concentrate only on
the engine capacity and tend to ignore the switchgear that operates with it.
The selection of the appropriate manual transfer
switch is as important as choosing a proper engine. The switch that is not
adequately rated will have trouble bearing the load, and the oversized one will
be overpriced without giving extra benefits.
At Blades Power Generation, we always recommend sizing the switch
around the actual power demands of the property rather than guessing. Here’s a
guide to help you make the right choice.
Start With Your Essential Circuits
The first step is deciding what you need to keep running during a
power cut.
For a home, that may include:
●
Lighting
●
Fridges and freezers
●
Heating controls
●
Internet routers
●
Water pumps
For workshops or commercial buildings, priorities are often:
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Security systems
●
Refrigeration
●
Roller shutters
●
Machinery
●
Server equipment
Not every circuit needs generator backup. In many cases, selecting
only the essential loads keeps the system simpler and more affordable.
Match the Switch to the Generator Output
Your transfer switch should match the output rating of the generator
and the incoming electrical supply.
Most domestic properties in the UK use:
●
63A
●
100A
Larger commercial or agricultural properties may require much higher
ratings, especially on three-phase systems.
At Blades Power Generation, we often see problems caused by people
pairing small generators with oversized switchgear or attempting DIY
installations without checking load requirements properly.
Think About Future Expansion
A transfer switch is not something most people want to replace after a
year or two.
If you are planning:
●
EV chargers
●
Workshop expansion
●
Additional refrigeration
●
New machinery
it is sensible to leave some room for future demand. A small amount of
planning now can save major rewiring later.
Indoor or Outdoor Installation Matters
The location also affects the switch choice.
Outdoor installations in the UK need weather-resistant enclosures with
suitable IP ratings. Damp conditions, coastal air, and cold winters can all
shorten the lifespan of poorly protected equipment.
This becomes even more important when the system is relied upon for emergency power during storms or
unexpected outages.
Getting the
Sizing Right
A properly sized transfer switch keeps the system safe, reliable, and
easier to operate when mains power fails.
Blades Power Generation ensures that our
clients get suitable solutions based on the reality of their properties instead
of complicating things unnecessarily. No matter if you own a residential
workshop, farmland, or commercial premises, having the proper setup begins by
assessing the load.
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