- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 22 Jan 2018
A fused spur is an electrical supply accessory that incorporates a fuse. This fuse, with a lower rating than the fuse for a ring man, allows an electrical supply using one feed cable to a socket to be taken off a ring main.
Fused spurs commonly used, as an alternative to a conventional socket, for the installation of powerful electrical appliances that need to be installed without a plug, such as washing machines, electric heaters, dishwashers, fridges, and so on. For safety and maintenance purposes, these sorts of appliances may require installation on a separate cable from the ring main.
Switched fused spurs include a manual on/off switch, while unswitched fused spurs do not.
|switched fused spur||electrical symbol for switched fused spur|
A variation is a double pole fused spur switch which incorporates an extra isolation feature. This makes the switch safer to use as it separates the live and neutral wires.
 Related articles on Designing Buildings Wiki
Featured articles and news
Timber is a natural carbon sink, but it must not end up in landfill at the end of its useful life.
BSRIA has collaborated with the Department of Health on research into air permeability in isolation rooms.
New step-by-step route maps for implementing effective surface water management measures are published.
GMP is an agreement with a contractor that the contract sum will not exceed a specified maximum. Read more here.
The BREEAM Sustainability Champion is changing to the Advisory Professional - here's what you need to know.
A fresh round of job-cuts takes the total number of redundancies to over 1,000.
Read our introductory article to the completion date in construction contracts.
Almost 90% of freight in London is moved by road. The River Thames could add much needed extra capacity.
National Infrastructure Commission warn that large infrastructure projects are at risk of falling behind.
The quality of Cambridge owes as much to its open spaces as to its architectural uniqueness.