Protected circuit
Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), defines a protected circuit as:
| An electrical circuit that is protected against fire. |
Cabling should at least meet the requirements of PH 30 classification or an equivalent standard and should only pass through parts of the building in which fire risk is negligible.Protected circuits are required where it is critical that an electrical circuit continues to operate during a fire. This should include the use of sufficiently robust cables, careful selection of cable routes, and/or by the provision of physical protection in areas where cables may be susceptible to damage. Cable supports should generally be non-combustible and such that circuit integrity will not be reduced below that afforded by the cable.
Protected circuits should be separate from other circuits.
[edit] Related articles on Designing Buildings Wiki
- Amendment 3 BS 7671 Requirements for Electrical Installations IET Wiring Regulations.
- Approved document B.
- Approved document P.
- Approved documents.
- Articles by the Electrical Contractors' Association (ECA).
- Building regulations.
- Consumer unit.
- Electrical appliance.
- Electrical control systems.
- Electrical drawing.
- Electrical engineer.
- Fire.
- Glossary of electrical terms.
[edit] External references
- BS 5266-1.
- BS 5839-1.
- BS 7346-6.
- BS EN 50200:2006.
Featured articles and news
Proactive measures to secure property during extreme times.
Safety guidance from BSI released; comments requested.
Scour can make river currents structurally damaging.
Indoor environmental quality looks at air quality and other wellbeing factors.
A procurement method associated with Public Private Partnerships.
Infrastructure can use digital technology to encourage human growth.
Robotics and the construction industry.
ECA comments on CLC's three-phase recovery plan.
Their diplomatic and architectural history.
The origins of the six volume series.
Built to defend British waters, only to serve as pirate radio stations later.
A balanced approach to the office
Wellbeing to influence mix of home and office based working.
An introduction to cobotics.
Survey reports on outlook for the engineering sector.
A simple path to possible error avoidance.
Construction + technology = ConTech.