Page 77 - Electrician 1st year - TT - Malayalam

twin, 3 and 4 core flexible
copper

e)Single extrusion -do- 1.5 to 50 Domestic wiring 694 part I,II
on batten

2 Polythene insulated and PVC
sheathed with aluminium
conductor
a) single core flat & 250/440 1.5 to 50 Domestic wiring 1596
circular twin core on batten

b) flat twin with ECC & -do- 1.5 to 10 -do- 1596
circular

3 Lead alloy sheathed Aluminium Copper
i) single core 1.5 to 50 1.5 to 50
ii) 2,3 and 4-core circular 250/440 70 to 625 64.5 to 645
iii) twin & 3 core flat (ECC) 650/1100 1.5 to 16 1.5 to 16 Industrial wiring in damp 434 part I,II
250/440 corrosive atmosphere.
4 TRS sheathed
i) single core
ii) 2,3 and 4-core circular -do- 1.5 to 50 0.5 to 50 Wiring residential on 434 part I,II
batten,industrial wiring
iii) Twin & 3 core flat (ECC) -do- 1.5to625,64.5-645 Residential batten -do-
e) TRS sheathed flexible 1.5 to 16 1.5 to 16
f) Fire resisting asbestos 250/440 Welding cables in fire -do-
sheathed 650/1100 hazards.
g) Poly Phropene -do- Training cable for lifts -do-
sheathed flexible -do- and other mobile
equipments

5 Weather-proof cables 250/440 1.50 to 50
a)VIR insulated cotton, 650/1100
braided and treated with
weather resistance
compound
b)PVC insulated PVC -do- -do- Service connection and 434 part I,II
sheathed other outdoor application. 3035 part I
c)Polythene insulated, taped -do- -do- 3035 part II
braided and compounded

6 Power cables heavy duty
1.1kV grade
PVC insulated PVC
sheathed cable
a)Unarmoured/armoured
i) Single core 650/1100 1.5 to 1000 Armoured cable in 1554
ii) Twin core 650/1100 1.5 to 500 singlecore not available. Part I/76
iii) Three-core -do- 1.5 to 400 Unarmoured power
iv) Three and a half core -do- 16 to 400 cables are used only in
v) Four core -do- 1.5 to 50 protected places. Use of
copper is banned for
such applications

ഇലക്്ടട്്രരീഷ്്യൻ (NSQF - പുതുക്കതിയ 2022) റതി. സതി . ജോവണ്ടതി എക്്ടസതിർവസസ്ട 1.2.17-19
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