Page 90 - Electrician - TT (Volume 1)
P. 90
ELECTRICIAN - CITS
Methods of wiring
There are two methods of wiring
1 Joint box or tee system
2 Loop in system
1 Joint box or tee system
• In this system the connection to the lamp are made through joints made in joint boxes by means of suitable
connectors or joint cut outs.
• In this method though there is a saving in the quantity of wire or cable required but the same offset by extra
cost of joint boxes.
• Now-a-days the use of this system is limited to temporary installation only assist cost is low.
2 Loop in system
• This system is universally employed for connection of various lamps or other appliances in parallel.
• In this system, when a connection is needed to a light or switch, the feed conductor is looped by direct to
the terminal and then carrying it forward to the next point
• The switch and light feeds are carried round the circuit in series of loops from one point to another until last
point reached.
• The phase conductor is looped in switch board or box only.
• Neutral wire is looped either in switch board or light or fan.
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CITS : Power - Electrician & Wireman - Lesson 20-25 CITS : Power - Electrician & Wireman - Lesson 20-25
