SJE Electrical Installations


Installation of a Backup Generator Emergency Standby Power
Residential or Small Business in the UK

Backup Generator Installation
There are several options, from a simple portable generator which can supply a stand alone socket, to a more advanced system that ties in with your existing circuitry.

Neither the stand alone system or more importantly the advanced system should be attempted as a DIY project, if installed incorrectly the generator can back feed into the main utility system and electrocute anyone working on the outage further down line.

The advanced system uses a change over switch, which can be operated manually or more expensively, automatically.

Depending on budget will probable determine the power output required to run important circuits. A generator with capacity to run all circuits simultaneously will probably be expensive, so a happy medium should try to be met. Enough power to run lights, a central heating pump and perhaps a couple of appliances, fridge, tv, pc’s etc. Tip: For emergency residential backup select a generator between 5.0Kw and 9.0Kw

Electric heating appliances will need a far greater generator size and thus expense.

To keep expense to a minimum, but maintaining some comfort, it would be practical to install a diesel generator with perhaps 4.5Kw to 9Kw output.

A standard 5.5Kw diesel generator will run for 8 hours approx on a full tank @75% of full load.
Critical generator backup is normally auto-transfer, this can be for dedicated circuits or cover the whole electrical installation.
Typically used for life support machines or access to important computer data base/s or if severe financial disruption would occur in the event of a power cut.

Emergency Generators >

Transfer Switch Installation >

 

 

  

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