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How to Supply Electricity to Your Shed

Whether you’re looking to turn your garden shed into an office space to start your own business, making a workroom where you need electricity for power tools or creating a den where you can go and relax away from the house, learning how to supply electricity to a garden shed adds practicality and comfort. For functionality, you may also want to consider extending your Wi-Fi connection to the shed so you can do work or browse online. It is crucial when considering supplying electricity to your garden shed that you plan and prepare properly as well as work with a trained electrician.


You should plan what you’ll need electricity for to avoid missing anything out. If you are planning on turning your garden shed into a workshop, you’ll need lighting for safety, plug sockets for your power tools and you might want to consider a space heater for the colder months. For an office you’ll want the same lighting and a space heater but also plug sockets and maybe even an ethernet socket. Draw up a plan of the building and mark where you think your lights and plug sockets will need to go.

It might also be a good idea to add a security or alarm system and draw that onto your plan. Drawing up a guide of where you want and need things to go makes for easier installation and helps your electrician.

Another factor to remember is to notify the council of your plans. Installing electricity into outbuildings such as sheds or garages is notifiable, meaning that you have to give building notice or submit full plans of the installation before work starts.

You will also need to plan where you will dig the trench that will carry the cables needed from your house to the shed.


It might seem like a good idea to just do it yourself but unless you’re a trained electrician it is simply too dangerous. Remember that electricity is dangerous and fitting your own shed with power is illegal.

The electrician will need to be qualified to complete section P of the Building Regulations. The electrician may need to make changes to your fuse box to support the cable that runs through the trench to your shed. They may need to add an RCB Residual Circuit Breaker which is a safety device that cuts the power if there’s any damage or damp affecting the cable or an MCB (mini circuit breaker) which cuts off the power in case of overloads.

The electrician will fit the sockets and lighting and most importantly provide you with the certificates stating that it is up to code. These are important for when you may want to sell your house in the future.

Trench Digging

If you’re looking to save some money or just simply be more hands on in the process of adding electricity to your garden shed you can tell the electrician that you’ll dig the trench needed to carry the cables from your home to your shed. Before digging, mark out with a rope the route the trench and cables will take. Use a spade to remove any turf and keep it safe to one side. Turf can be stored for up to 2 weeks without watering.

The trench needs to be at least 50 cm deep and wide enough to hold the cable. The longer the distance from your home to the shed, the larger the cable will need to be and in turn the larger the trench will need to be.

After all the electrics are fitted and working you can replace the turf and water it and your garden should be back to normal.

Require more information on how to enhance the benefits and features of your garden building? Contact a member of our experienced and knowledgeable team who’ll be able to point you in the right direction.

Posted by Matt Jordan

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