Electrical Work Glossary
Electrical terminology can sometimes seem confusing, particularly when arranging repairs, upgrades, installations or safety inspections.
This glossary explains common electrical terms used throughout the industry, helping homeowners, landlords and businesses across Glasgow, Cumbernauld, Falkirk, Stirling and the wider Central Scotland area make informed decisions.
If you require advice regarding an electrical issue, Empire Electrical Services (Alba) Ltd is always available to provide professional guidance and practical solutions.
A
What Is an Additional Socket?
An additional socket is a new electrical outlet installed where extra power access is needed. Additional sockets improve convenience, reduce reliance on extension leads and help support modern electrical demands safely.
What Is an Arc Fault?
An arc fault occurs when electricity jumps between damaged or loose conductors. Arc faults generate heat and can significantly increase the risk of electrical fires if left unresolved.
B
What Is BS 7671?
BS 7671, commonly known as the IET Wiring Regulations, is the UK standard governing electrical installations. Compliance helps ensure electrical systems remain safe, reliable and legally compliant.
C
What Is a Consumer Unit?
A consumer unit, often called a fuse box, distributes electricity throughout a property. Modern consumer units contain RCDs and circuit breakers that help protect against electrical faults and electric shock.
What Is a Circuit Breaker?
A circuit breaker is a safety device that automatically disconnects power when a fault or overload occurs, helping prevent electrical damage and fire risks.
What Is CCTV Installation?
CCTV installation involves fitting security cameras that monitor and record activity around a property. CCTV systems can improve security, deter crime and provide valuable evidence when required.
D
What Is a Dedicated Circuit?
A dedicated circuit supplies power exclusively to a specific appliance or installation. These circuits are commonly required for EV chargers, solar systems and other high-demand equipment.
E
What Is an EICR?
An Electrical Installation Condition Report (EICR) is a formal inspection of a property's electrical system. It identifies defects, safety concerns and potential non-compliance with current regulations.
What Is an Emergency Electrician?
An emergency electrician responds to urgent electrical issues such as power failures, burning smells, exposed wiring, electrical faults or repeated circuit trips.
What Is an EV Charger?
An EV charger is a dedicated charging point for electric vehicles, providing faster and safer charging than a standard household socket.
What Is Electrical Testing?
Electrical testing assesses the safety and condition of electrical installations and equipment, helping identify hidden faults before they become serious problems.
F
What Is a Fuse?
A fuse is a protective device that interrupts electrical flow when excessive current passes through a circuit, helping prevent overheating and fire hazards.
What Is a Faulty Circuit?
A faulty circuit is an electrical circuit that is not functioning correctly due to damage, wear, loose connections or component failure.
G
What Is Grounding (Earthing)?
Earthing provides a safe path for fault currents to travel into the ground, helping protect people and property from electric shock.
I
What Is an Interlinked Smoke Alarm?
An interlinked smoke alarm system connects multiple alarms together so that when one alarm activates, all alarms sound simultaneously. These systems provide earlier warning and improved protection throughout a property.
What Is an Isolation Switch?
An isolation switch allows electrical equipment or circuits to be safely disconnected from the power supply for maintenance or emergencies.
L
What Is LED Lighting?
LED lighting uses energy-efficient technology to provide illumination while consuming less electricity and lasting significantly longer than traditional lighting.
What Is a Lighting Circuit?
A lighting circuit supplies electricity to lighting fixtures throughout a property.
N
What Is NAPIT Registration?
NAPIT registration demonstrates that an electrician has been independently assessed and approved to carry out electrical work to recognised industry standards.
O
What Is an Overloaded Circuit?
An overloaded circuit occurs when electrical demand exceeds the circuit's designed capacity. This can cause breakers to trip and increase safety risks.
P
What Is PAT Testing?
Portable Appliance Testing (PAT) involves inspecting and testing portable electrical appliances to verify they remain safe for use.
What Is Power Loss?
Power loss refers to a complete or partial loss of electrical supply caused by faults within the property or the wider electricity network.
R
What Is an RCD?
A Residual Current Device (RCD) disconnects power when it detects electricity flowing through an unintended path, helping protect against electric shock.
What Is a Rewire?
A rewire involves replacing some or all of a property's electrical wiring, sockets, switches and associated components to improve safety and meet modern standards.
S
What Is a Security Alarm System?
A security alarm system monitors a property for unauthorised access and alerts occupants when a potential security breach occurs.
What Is a Smoke Alarm?
A smoke alarm detects smoke and provides an early warning of fire. Modern interlinked systems can activate alarms throughout an entire property simultaneously.
What Is Solar PV?
Solar PV (Photovoltaic) panels convert sunlight into electricity that can be used within a property, reducing energy bills and reliance on the grid.
What Is Surge Protection?
Surge protection devices help safeguard electrical installations and equipment from sudden voltage spikes.
T
What Is a Tripping Circuit?
A tripping circuit occurs when a protective device automatically disconnects power due to an overload, fault or safety concern.
V
What Is Voltage?
Voltage is the electrical force that drives current through a circuit. Standard domestic electricity supplies in the UK operate at approximately 230 volts.
W
What Is Wiring?
Wiring refers to the network of electrical cables installed throughout a property that distributes power to sockets, lighting and appliances.
What Is a Whole House Surge Protector?
A whole house surge protector is installed within the consumer unit to help protect electrical circuits and connected devices from voltage spikes.
If you have questions about any of these electrical terms, or need assistance with electrical work at your home or business, Empire Electrical Services (Alba) Ltd is here to help. We provide trusted domestic and commercial electrical services throughout Glasgow and Central Scotland, backed by over 25 years of industry experience. Contact our team today for professional advice and a free no-obligation quotation.
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