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Spur circuits attached to the ring can overheat if not fused at the spur-point (i.e., if a BS 5733 or similar fused spur is not used) This is almost certainly a breach of the appropriate electrical standards (e.g. BS 7671 in the UK): the maximum load on any unfused spur is a single fitting.
This term applies to radial lighting circuits where junctions are made at ceiling roses with line and switched line wires. Not to be confused with the loop-like arrangement of a ring final circuit. (Unfused) spur A branch off of a final circuit supplying a single accessory, especially from a ring final circuit. Fused spur
Firearms use triggers to initiate the firing of a cartridge seated within the gun barrel chamber.This is accomplished by actuating a striking device through a combination of mainspring (which stores elastic energy), a trap mechanism that can hold the spring under tension, an intermediate mechanism to transmit the kinetic energy from the spring releasing, and a firing pin to eventually strike ...
The most common form of safety mechanism is a switch, button or lever that when set to the "safe" position, prevents the firing of a firearm. [1] Manual safeties are as varied as the designs of firearms themselves, but the two most common mechanisms are a block or latch that prevents the trigger and/or firing mechanism from moving, and a device ...
Part 1: Rewirable and non-rewirable 13 A fused plugs; Part 2: 13 A Switched and unswitched socket-outlets; Part 3: Adaptors; Part 4: 13 A fused connection units: switched and unswitched; Part 5: 13 A fused conversion plugs; The following chronology shows revisions, supplements and significant amendments.
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A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.
Select fire, is the capability of a weapon to be adjusted to fire in semi-automatic, fully automatic, and/or burst mode. [1] The modes are chosen by means of a selector switch, which varies depending on the weapon's design. Some select-fire weapons have burst fire mechanisms to limit the maximum number of shots fired automatically in this mode.