karen@brightsparkelectrician.co.uk

01892 531 728

01892 531 728

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Why must earthing and bonding be checked

If you are having an alteration or addition made to you electrical installation, your Bright Spark Electrician is required to first check, amongst other things, that the exisiting earthing & bonding arrangements are adequate.

This is because the safety of any new work, however minor, will depend on those earthing and bonding arrangements (as does the safety of your existing installation).

What is earthing?

Metal parts of an electrical installation or appliance may become live if there's a fault.

The Purpose of earthing is to minimize the risk of electric shock should anyone touch those metal parts when a fault is present.  This is achieved by providing a path for fault current to flow safely to earth, which also caused the protective device to disconnect the circuit, removing the danger.

 

Diagram Courtesy of NICEIC.

In this example the cooker develops a fault, the fault current flows safely to earth through the protective (earthing) conductor.  This cuases the protective device (fuse or circuit-brekare) in the consumer unit to disconnnecct the supply from the cooker, removing the risk of electric shock to anyone who touches it.

What is bonding?

 

This example shoes: MAIN PROTECTIVE BONDING

 

Diagram Courtesy of NICEIC.

The Purpose of bonding is to minimize the risk of electric shock to anyone who may be touching two separate conductive parts when a fault occurs somewhere in the supply  or tin the elecctrical installation (see above).

This is achieved by connecting bonding conductors between particular points to minimize the voltage that may be created between them under fault conditions.

Your Bright Spark Electrician will advise you if the bonding arrangements in your premises need to be improved for safety reasons.

If you have concerns about your property then a quick test, and visual inspection can be carried out by a qualified electrician, this will tell you to what extent your cable has or has not deteriorated.

Contact us at Bright Spark Electrician for your Free No Obligation Quotation, and Visual Safety Inspection to set your mind at ease should you be concerned about your earthing & bonding.

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