Mains (electricity, water and gas)
Contents |
[edit] Introduction
The term ‘mains’ is frequently used in the UK to refer to a main utility supply pipe that is part of one of the following distribution systems:
NB: Although the term ‘main sewer’ is frequently used, a sewer is not generally implied when the term ‘mains’ is used unless it is referred to as a ‘main sewer’.
[edit] Mains electricity
This is the AC electrical power supply that is delivered to homes and businesses and which powers electrical equipment. In the UK, this is nominally 230V at a frequency of 50Hz (typically 120V and 60Hz in the US).
Typical uses for mains electricity include:
- Lighting
- Cooking
- Space heating
- Water heating
- Air conditioning
- Refrigeration
- Televisions, computers and so on
- Washing machines and dishwashers
For more information see: Electrical supply
[edit] Mains water
‘Water main’ is used in the UK to refer to a main water pipe that is part of the public water supply system; it may run beneath roads, fields and other land to supply households, businesses and light industry. The water in or from a water main is frequently referred to as ‘mains water’.
In residential applications, a sink, bath or shower may be supplied directly by mains water or indirectly via a cold-water tank and hot-water cylinder. However, regulations dictate that a kitchen sink must always be connected to the water main to allow access to clean drinking water.
For more information see: Mains water.
[edit] Mains gas
Mains gas is the natural gas that is distributed to buildings through a pipeline infrastructure. In the UK, mains gas is supplied to more than 21 million homes and is the most popular fuel for heating and cooking.
While the gas itself is owned by individual gas suppliers, all gas passes through the National Grid’s transmission system on its route to end users. As the owner and operator of the UK’s gas transmission infrastructure, the National Grid works with gas suppliers to ensure delivery.
For more information see: Mains gas.
[edit] Related articles on Designing Buildings
- Approved Document G
- Electricity supply.
- Energy infrastructure.
- Gas Safe.
- Glossary of electrical terms.
- Mains gas.
- Mains water.
- Natural gas.
- Power generation.
- Power.
- Trenchless pipe rehabilitation market.
- Types of fuel.
- Urban water systems management: A data analytics approach EP 105.
- Voltage.
- Water consumption
Featured articles and news
In major support package for small businesses.
Conservation and transformation
Reading Ruskin’s cultural heritage. Book review.
Renovating Union Chain Bridge.
AI tools for planning, design, construction and management
A long, continually expanding list, any more to add?
Robots in the construction industry
From cultural characterisations to construction sites.
Empowering construction with AI integration
New horizons with a human touch.
Key AI related terms to be aware of
With explanations from the UK government.
A Better Hiring Toolkit for construction
Tooling up to hire under best practice standards in the sector.
Recharging Electrical Skills in Wales
Step by step collaborative solutions.
Ireland budget announcement 2025
CIOB responds with positivity, criticism and clarity.
The continued ISG fall out, where to go?
Support for ISG contractors, companies and employees.
New HES national centre for traditional building retrofit
Announced as HES publishes survey results which reveal strong support for retrofit.
Retrofit of Buildings, a CIOB Technical Publication
Expected to become one of the largest activities in the global construction industry.
Scope determination appeals and the Building Safety Act
Process explained following release of appeals guidance.
The ECA industry focus video channel
Keeping update with the industry session by session.
Over 25 recorded informations sessions freely available..