single phase house wiring board wiring with meter and MCB
How to Wire a Distribution Board?
Distribution Board aslo known as “Panel Board”, “Switch & Fuse Board” or “Consumer Unit” is a box installed in the building containing on protective devices, such as circuit breaker, fuses, isolator, switches, RCDs and MCBs etc. The electric main supply (230V AC & 120V AC in US) is connected through secondary of the transformer (3, Phase 4 Wire System), single phase energy meter and MCBS (DP & SP) to Sub Circuits and Final Sub Circuits to protect all the connected electrical devices and appliances through electrical Wiring installation.
Related Wiring Tutorial: Wiring of the Distribution Board with RCD (Single Phase Supply From Utility Pole & Energy Meter to the Consumer Unit)
In the following single phase electrical wiring for home supply, We used 63A MCB (DP), 63A RCD (DP) and different rating if MCBs (SP) such as 20A, 16A, 10A etc according to your need.
In the fig below for single phase home electric supply installation and wiring of a distribution board, you may see the single phase electric supply (230V AC and 120V AC for US) service mains i.e. Line (Red) and Neutral (Black) carrying single phase supply from transformer secondary and utility pole (3 Phase, 4 Wire (Star) System) to the single phase energy meter.
Related Wiring Tutorials:
Different Types of Wiring Systems and Methods of Electrical Wiring
How To Wire Switches in Parallel?
Both the Live and Neutral wires go to the Main Double Pole Circuit breaker. The Live from DP MCB then connected to the common busbar segment for MCBS which is directly connect to the Single Pole Circuit breaker. The outgoing of the SP MCBS are connected to the sub circuits, final sub circuits and electrical devices and appliances then.
Related Post: How to Connect and Install a Portable Generator to the Home Supply System (3 Methods)
The Neutral from the Main DP MCB is connected to the Neutral Link and the outgoings wires are connected to the sub, final sub circuits and electrical appliances. Keep in mind all the electrical devices and appliances should be connected to the Earth Link for safety which is directly connected to the earth electrode and earth plate for proper earthing and grounding.
While we have already discussed the distribution board, types of distribution boards such as Main Distribution Board (MDB), Sub Distribution Board (SDB), Final Distribution Board (FDB), Sub Circuits and Final Sub Circuits in the previous post, Therefore, We will only discus the main electrical wiring accessories used in this basic Single Phase Home Supply Main Distribution Board Installation.
Related Wiring Tutorial: Staircase Wiring Circuit Diagram – How to Control a Lamp from 2 Places by 2-Way Switches?
(CB) Circuit Breakers (SP)
Circuit breaker is a device which switch OFF the circuit from electrical supply at abnormal and make the circuit in normal conditions same as the fuse. 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 using circuit breaker instead of fuse makes sense due to automatic operation. In addition, you may be able to reset it again if it ever trips.
single phase house wiring board wiring with meter and MCB
How to Wire a Distribution Board?
Distribution Board aslo known as “Panel Board”, “Switch & Fuse Board” or “Consumer Unit” is a box installed in the building containing on protective devices, such as circuit breaker, fuses, isolator, switches, RCDs and MCBs etc. The electric main supply (230V AC & 120V AC in US) is connected through secondary of the transformer (3, Phase 4 Wire System), single phase energy meter and MCBS (DP & SP) to Sub Circuits and Final Sub Circuits to protect all the connected electrical devices and appliances through electrical Wiring installation.
Related Wiring Tutorial: Wiring of the Distribution Board with RCD (Single Phase Supply From Utility Pole & Energy Meter to the Consumer Unit)
In the following single phase electrical wiring for home supply, We used 63A MCB (DP), 63A RCD (DP) and different rating if MCBs (SP) such as 20A, 16A, 10A etc according to your need.
In the fig below for single phase home electric supply installation and wiring of a distribution board, you may see the single phase electric supply (230V AC and 120V AC for US) service mains i.e. Line (Red) and Neutral (Black) carrying single phase supply from transformer secondary and utility pole (3 Phase, 4 Wire (Star) System) to the single phase energy meter.
Related Wiring Tutorials:
Different Types of Wiring Systems and Methods of Electrical Wiring
How To Wire Switches in Parallel?
Both the Live and Neutral wires go to the Main Double Pole Circuit breaker. The Live from DP MCB then connected to the common busbar segment for MCBS which is directly connect to the Single Pole Circuit breaker. The outgoing of the SP MCBS are connected to the sub circuits, final sub circuits and electrical devices and appliances then.
Related Post: How to Connect and Install a Portable Generator to the Home Supply System (3 Methods)
The Neutral from the Main DP MCB is connected to the Neutral Link and the outgoings wires are connected to the sub, final sub circuits and electrical appliances. Keep in mind all the electrical devices and appliances should be connected to the Earth Link for safety which is directly connected to the earth electrode and earth plate for proper earthing and grounding.
While we have already discussed the distribution board, types of distribution boards such as Main Distribution Board (MDB), Sub Distribution Board (SDB), Final Distribution Board (FDB), Sub Circuits and Final Sub Circuits in the previous post, Therefore, We will only discus the main electrical wiring accessories used in this basic Single Phase Home Supply Main Distribution Board Installation.
Related Wiring Tutorial: Staircase Wiring Circuit Diagram – How to Control a Lamp from 2 Places by 2-Way Switches?
(CB) Circuit Breakers (SP)
Circuit breaker is a device which switch OFF the circuit from electrical supply at abnormal and make the circuit in normal conditions same as the fuse. 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 using circuit breaker instead of fuse makes sense due to automatic operation. In addition, you may be able to reset it again if it ever trips.
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