Cables and Cable Preparation Flashcards
Which regulation applies to optical fibre cable construction?
JSP604
What minimum classification of cabling is required to be installed within underground or windowless MOD facilities?
EuroClass Cca
If lower classification cabling is used externally, at what distance is it required to be terminated when entering a building?
terminated inside the building, within 2 m of the point of internal penetration of the external fire barrier (e.g. floor/ceiling/wall)
What is the requirement for redundant cabling as specified in both BS 8492 and JSP 604?
that they add to the total potential fire load of a building and thus BS 8492 requires that they are removed.
All cabling must be supplied with supporting paperwork which highlights the performance of the cabling, what is this known as?
Declaration of Performance (DoP);
What information should this documentation contain?
- Manufacturer’s name.
- Product code.
- Traceability.
- Use of this product.
- AVCP System.
- Notified Body.
- Declared performance and respective standards.
- Date and manufacturer’s stamp.
State the characteristics of external optical fibre cabling?
- Moisture and chemical resistant.
- Tolerance to variations in temperature.
- Strain-tensile strength.
- Abrasion resistant.
- Crushing resistant.
- Ultra-Violet resistant.
- Rodent resistant.
- Lightning/electrical damage.
State the characteristics for internal grade optical fibre cabling?
- Ease of termination.
- Flexibility.
- Riser installation.
- Flame-Retardant.
What are the correct sizes (in microns) used for Secondary and Primary coated optical fibre?
Primary 400Microns
Secondary 900Microns
What are the minimum labelling criteria of optical fibre cabling?
All cables shall be labelled at both ends and on both sides of any point at which the cable transits a sealed passage.
What information should a cable label specify?
Originating location/connection, Parenting system, Type of cable, Number of cores, Unique serial number, Destination location/connection detail.
What chemical is most commonly used to clean optic fibres and connections?
IPA (Isopropyl Alcohol)
What is used to safely prepare primary coated fibre for splicing?
Parrot cutters Kevlar Scissors Jacket stripping tool Miller Strippers No Nik “tool Tube cutters “Lite-Strip“
Name four types of internal optical fibre cabling?
Primary Coated Cable Secondary Coated Fibre Single Ruggerdised Stranded Secondary Coated or Distribution Cable Breakout Cable Unitary Single Loose Tube
Which tool would be used to strip primary coating from optical fibre cabling?
Miller Strippers
