Page 116 - Electrician - TT (Volume 1)
P. 116
ELECTRICIAN - CITS
Symbols used in the circuit Symbols used in
Sl. No. Description
diagram layout
14 Earth point
15 Circuit breaker
16 Terminal strip
17 Link (closed)
18 Plug and socket (male and female)
19 Ceiling rose
N.A: Not applicable
The B.I.S. Symbols used in the wiring is given here.
ITEMS SYMBOLS ITEMS SYMBOLS
I Wiring II Fuse-boards
1 General wiring 1 Lighting circuit fuse-boards
a Main fuse-board without
2 Wiring on the surface switches
b Main fuse-board with
3 Wiring under the surface switches
c Distribution fuse-board
4 Wiring in conduit without switches
a Conduit on the surface d Distribution fuse-board with
switches
b Conduit concealed
2 Power circuit fuse-boards
The type of conduit may be a Main fuse-board without
indicated, if necessary. switches
5 Wiring going upwards b Main fuse-board with
switches
6 Wiring going downwards c Distribution fuse-board
without switches
7 Wiring passing vertically d Distribution fuse-board with
through a room switches
103
CITS : Power - Electrician & Wireman - Lesson 20-25 CITS : Power - Electrician & Wireman - Lesson 20-25
