EXPERT ADVICE
No earth wire on light fitting - everything you need to know
Updated 01/26
By: Wendy Reynolds
Reviewed: Alex Peters
Earth wires are needed to keep electrical fittings safe and prevent serious injury. So, what if there is no earth connection on your new light fitting? Don't worry. Here's how to install a light with no earth wire connection.
What is an earth wire?
Exemptions for earth wires
Grounding and earthing
Conductive materials
What to do when there isn't an earth wire
Building Regulations for earth wiring
When to call in an electrician
Approximate costs for electrical work
Key takeaways
What is an earth wire?
Earth wires are often installed as part of a property's lighting circuit. An earth wire is typically made with a solid copper core and has no moulded insulation.
The earth connection grounds the electrical current if there is a fault in the lighting circuit. By grounding the flow of electricity, earth wires protect against electric shocks and fires.
This wire is needed to keep your light fitting safe.
What colour is the earth wire?
The earth wire can often be found inside a green and yellow sleeve, making it easy to spot in your light wiring circuit.
Why do some ceiling lights not have an earth wire?
Earth wires are an important safety feature but they are not found in all light wiring circuits.
Here are the most common reasons why some ceiling light fittings do not include a grounding wire:
Property age - Properties built before 1970 did not need to be grounded
Over the years building regulations have made earth wires mandatory, but they are often missing from older properties with their original wiring
Use of non-conductive materials - An earth connection is needed to prevent a live wire from passing an electrical current directly into a light's metal casing
Lights made from non-conductive materials do not always include an earth wire connection
Double insulated / class 2 light fitting - An earth connection is not needed if a class 2 light fitting has been installed
Class 2 - or double insulated - lights use two layers of insulating material to protect live wires in the circuit. The use of double insulation greatly reduces the risk of fire and electric shocks
We recommend consulting a certified electrician to make sure your light fittings are safe and properly grounded.
Search for checked tradespeople working in your area
Do all ceiling light fittings need to be earthed?
Light fittings made from non-conductive materials do not need to be earthed.
Fire and electrocution risks are significantly reduced when lights are made from:
Plastic
Glass
Other non-conductive materials
Class 2 light fittings also do not need to be earthed due to their double layers of insulation.
However, you will need to make sure all lights with metal casings and components are grounded with a safe earth wire connection.
Metal is a conductive material. Your safety will be at risk if an electrical current shorts and an unearthed live wire comes into contact with a metal light fitting.
What do I do with the earth wire if my light fitting is not earthed?
Are you updating your home's light fittings? If so, you may have purchased a light fitting without an earth connection.
Don't panic. You can still install your new light, even if there is an existing earth wire in the circuit.
As mentioned earlier, not all light fittings need to be earthed.
The existing earth connection wire can be trimmed down when installing a class 2 ceiling light fitting into the circuit. Any exposed wire must then be secured out of the way with insulating electrical tape.
It really isn't a good idea to start snipping at wires if you don't know what you are doing!
Accidentally cutting a live electrical wire can have fatal consequences. An experienced electrician can safely trim the yellow and green wire and fit your new light fitting at the same time.
Under no circumstances should you attempt to install a light fitting that needs to be earthed into a circuit without an earth wire.
What if there is no earth wire?
So we've covered what to do if you have an earth wire you don't need, but what if you need one and there isn't one in the circuit?
You have two options if there is no earth wire in your light fitting circuit:
Install class 2 lighting - Double insulated lights do not need to be earthed and can be installed into circuits without an earth wire
Rewire the property - Older properties were not required to have an earth wire, so having your property rewired may be your only option if you want to install light fittings made from conductive materials
If you need an earth wire in your home's lighting connection, discussing your options with a certified electrician is best.
The right tradesperson will be able to determine the correct lighting installation for your property. Want help finding someone that covers your local area?
Building regulations
The Institution of Engineering and Technology (IET) and the British Standards Institution (BSI) provide clear rules for installing and earthing light fittings.
The BS 7671 and Part P building regulations set out the following rules:
All metal light fittings, or those with conductive components, must be earthed
Class 2 light fittings do not need to be connected to an earth wire
An earth wire must be included in the light circuit, even if the light fitting does not need earthing. An earth wire must remain in the circuit to provide a safe grounding connection for future installations
Outdoor and bathroom light fittings must be earthed and comply with stricter safety standards
Light fittings must be installed by an electrician registered to a competent person scheme
Hiring a registered electrician is the best way to make sure your light fittings are safe and comply with current building regulations.
Whether you're looking for an electrician near you to help with the work, ideas for living room lighting or a guide to buying and installing ceiling lighting, we're here to help.
Electrician costs
Certified electricians will have the skills and knowledge needed to safely install a light fitting with or without an earth connection. Avoid attempting a DIY installation as working with electrical wires can be dangerous.
Electricians in the UK charge an average hourly rate of £50.
If you want to install a light with an earth connection but there is no earth wire available, your home may need to be rewired.
Property rewiring costs vary depending on the size of your home. It costs an average of £4,450–£8,000 to rewire a three-bedroom house.
Electricians charge varying fees to install different types of light fittings. Take a look at our downlight installation cost guide and chandelier fitting cost guide for more information.
Alternatively why not try using our dedicated calculator for a rough estimate of what you could be charged for a job like this?
Job Estimate Calculator
Key takeaways
Earth wires are used to keep light fitting circuits safe
Earthed light fittings are less likely to cause a fire or electric shocks if the circuit shorts
Class 2 light fittings and those made from non-conductive materials don't need an earth connection
BS 7671 and Part P building regulations set our clear rules for the safe installation and earthing of light fittings
Earth wires can be trimmed down if the connection isn't needed
A light fitting with an earth connection should not be installed into a circuit without an earth wire
Electricians charge an average hourly rate of £50
Finding electricians near you
It is always a good idea to use a certified electrician to install your new light fitting. Enter your postcode into the search box to find electricians who work in your local area.
Search for checked tradespeople working in your area
See the tradespeople we've checked for your job