T2 Part 10 Multicore Cables Flashcards
Multiple Runs of SWA cable are normally installed on?
Cable tray
The perforations on steel cable tray are provided to?
Aid in the ventilation to cool the cables
Cable tray comes in which different types?
Light / Medium / Heavy Duty
Which type of bolt is used to join Cable tray
Round Head Bolts
Cut edges on HDG cable tray should be.?
Filed and Painted with a zinc rich paint.
Metallic cable tray is?
An exposed conductive part and must be earthed
What is an acceptable tool to tighten an SWA Gland.
Adjustable Spanner
The second letter Y in NYMJ stands for ?
P.V.C
In a NYMJ cable the earth Conductor has?
A CSA equal to the current carrying conductors
With Fire performance cables, LSOH-FR stands for ?
Low smoke zero Halogen- Flame retardant
With Fire performance cables, LSOH-FR stands for ?
Low smoke zero Halogen- Flame retardant
Fire Performance cables are used for?
Fire Alarm SYSTEMS
PA/VA Systems
Emergency Lighting systems
All of the above
SWA stands for ?
Steel Wire Armour
The minimum bending radius of a SWA is found by multiplying the overall diameter by a factor of.
8
According to the ETCI rules what is max permissible volt drop allowed in installations not greater than 80 Amps?
4%
When terminating two dissimilar metals what action needs to be taken.?
Application of an anti-corrosive paste
When terminating two dissimilar metals what action needs to be taken.?
Application of an anti-corrosive paste
The correct formula for power loss in cables is ?
P = |2*R
According to the ETCl rules reference method D2 for wiring systems is ?
Armoured cables buried in the soil
According to the ETCI rules ambient temperature for cable selection is considered to be ?
30 degrees
