Ampere
An ampere (A), also known as ‘amp’, is a unit of electrical current equal to the flow of one coulomb per second. It is named after Andre-Marie Ampere who is widely regarded as the leading pioneer of electrodynamics.
The International System of Units (SI) defines the ampere as the unit that is used to measure electric current; current being a count of the number of electrons flowing through a circuit.
One amp is the amount of current produced by a one volt acting through a resistance of one ohm.
Measuring amperes is important when working with electrical systems as a means of ensuring that the wires are not handling a higher current than they are rated for, and therefore risking faults or failure.
Amperes can be measured using a digital multimeter, but since models differ according to the amount of current they can measure, care should be taken to make sure a device with the correct rating is used.
Ampere’s force law states that there is an attractive or repulsive force between two parallel wires that carry an electric current.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Heat pump announcements, what homeowners need to know
An 'ultimate guide to heat pumps' from a heating company.
Construction contract awards reach £7.1bn in February
Their highest level in seven months.
The journey to sustainability in heritage
Research is the key to better understanding.
Heritage approaches to adaptation, mitigation and loss.
Bridging the gap between policy, finance and installation.
Development on brownfield land
Definition, background, policy and the latest consultation.
With the Design Framework for Building Services.
Retrofit of Buildings, a CIOB Technical Publication
Pertinent technical issues, measures and the roles involved.
ECA joins HSE campaign to support mental health
Working Minds’ five simple steps based on risk assessment.
Mental health in the construction industry
Mental health issues in brief with related articles.
Transitional arrangements, Building Control and the BSR.
For pre-October buildings with substantial progress by April.
How to write an inspection and test plan
ITPs for quality control and assurance particular elements.
Why quality counts in domestic ventilation systems
From products, to systems to the installation.
Empowering the Future with CIOB Academy
Lifelong learning, upscaling, and reskilling for the built environment.
Winners of the 2024 ASBP Awards
Project, Product and Initiative according to the 6 pillars.