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Home » Electrical Wiring Installation » Wiring of the distribution board , Single phase, from Energy meter to the main distribution board (Without RCD = Residual Current Devices)

Wiring of the distribution board , Single phase, from Energy meter to the main distribution board (Without RCD = Residual Current Devices)

 Wiring of the distribution board , Single phase, from Energy meter to the main distribution board (Without RCD = Residual Current Devices) 
Note: here you can read this wiring diagram with RCD = Residual Current Device
 Wiring of the Distribution Board with RCD , Single Phase, (from Energy Meter to the main Distribution Board) Fuse Board Connection.
 Wiring of the distribution board , Single phase, from Energy meter to the main distribution board (Without RCD = Residual Current Devices)
                                                                Click image to enlarge

1)
DP = Double Pole MCB  (The main switch)
This allows you to turn off and on the electric supply to your home because this is the main operating switch to control electric supply. remember that immediately switch off the main switch in emergency i.e. in electric shock, fire or  while working on main board. You can use also multiple mains switch if you has more supply unit i.e storage heater etc. so then use a separate Fuse board. 

2)
Circuit Breakers  

Circuit breaker is a device which switch off and on electric supply at normal ( and abnormal) condition). These are automatic protection devices in the Main switch board or fuse-box that switch off a circuit if they detect a fault. the size of the fuse and Circuit Breaker are similar, but it give more and more protection. You can reset it again if the trip ever.
Note:here you can read this wiring diagrame with RCD = Residual Current Device
 Wiring of the Distribution Board with RCD , Single Phase, (from Energy Meter to the main Distribution Board) Fuse Board Connection.
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16 comments

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  3. sir i am a hvac engineer but i am so keen to get electrical knowledge.. this material is very easy to understand as u have given figures along with explanation. thank you so much sir.

  4. Mukhlis Abdul Hadi

    thank you very much for this clear information. i have an Question. if i have load with 120A all single phase how i chose the right 3ph cable? because i have DB supplied with 3ph?<br />thank you

  5. Decent Vusi Dube

    I added a geaser on my Db Boxer but now it trips the main meter box not earth leakage what would be the couse?

  6. Decent Vusi Dube

    Thanx for this website it so helpful

  7. Play inaivmftore for me, Mr. internet writer.

  8. great website for inexperience technicians

  9. am so glad to learn more about electricity………………………KEEP IT UP

  10. I want to wire one double pole 20amp breaker to six lighting points plus six socket outlets …..please explain with a wiring diagram. I will appreciate.

  11. kindly explain a how to design 3 phase distribution board with protection devices

  12. Thanks a lot lot lot…. your ways of explaining the topic is better than other sites. image diagram of house wiring also matched in my house (Nepal,jhapa) as well.

  13. thanks a lot……

  14. Can’t we connect the load wires to the top of the mcbs? I have seen lot of guys connecting the load wires from the bottom of the mcb. Is there anything special in that??.(I have heard it’s because to the correct function of the short circuit solenoid of the mcb).Is that correct??

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