INDUSTRIAL WIRING PRACTICE - Quiz

1) What is the colour code of 3 phase 4 wire AC supply system?

Red, yellow, black, green Red, blue, black, yellow Red, black, green, blue Red, yellow, blue, black

2) What is the colour code of single phase AC supply as per NE code?

Red and blue Red and black Red and green Red and yellow

3) What is the alpha numeric notation of 3 phase apparatus connection?

L1, L2, L3 & N U, V, W & N R, Y, B & N A1,B1, C1 & N

4) Which material is used for harnessing of cable?

Metal bands P.V.C sleeves Link clips P.V.C saddles

5) How the cable size is determined for industrial wiring?

By considering the voltage of circuit By considering the load resistance By considering the current carrying capacity By considering the power factor