Electric current
The Illustrated Guide to Electrical Building Services, Third Edition (BG 32/2014), by David Bleicher & Peter Tse, published by BSRIA in 2014, states; ‘An electric current is a flow of charged particles. In electrical systems in buildings, the charged particles are normally electrons, flowing in conductors such as cables. In order for a current to flow, a voltage must be applied and a complete electric circuit must exist.
‘Current is measured in amperes – normally shortened to amps or A. One amp of electric current equates to 6.25 million million million (6.25 × 10^18) electrons moving past a point in one second. The safe current carrying capacity of cables is generally measured in amps, and hence so are ratings of circuit protection devices, for example a 13 A fuse.’
--BSRIA
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Noise in the built environment
BSRIA guide TG 20/2021.
17,000 people suffer conditions as a result of exposure to excessive noise at work.
Turning down the noise: Auditory health
A pervasive risk with far-reaching consequences.
UK Construction Week, London is here !
Debuting major international pavilions and much more.
Getting the most out of heat pumps and heating
How heat pumps work and how they work best.
Plumbing and heating for successful retrofit and renovation
Low temperature underfloor systems and heat pumps.
Cost-of-living crisis and home improvement plans
Starting on the right footing and top tips for projects.
Delays on construction projects
Types, mitigation and the acceleration of works.
From Chaucer to Fawlty Towers.
Electrotechnical excellence, now open for entries.
Net zero electricity grids BSRIA guide NZG 5/2024
Outlining the changes needed to transition to net zero.
CIOB Global Student Challenge 2024
Universitas Indonesia wins for second year running.
New project and cultural district described in detail.
ECA 2024 Apprentice of the Year Award
Entries open for submission until May 31.
UK gov apprenticeship funding from April 2024
Brief summary the policy paper updated in March.