Three Phase Electrical Wiring Installation in Home – NEC & IEC
How to Wire 3-Phase Electrical Distribution Board & Consumer Unit in Home
In our today electrical wiring installation tutorial, we will show how to wire and install a Three Phase distribution board and Consumer Unit from utility pole to a 3-Phase Energy Meter & 3-Phase Distribution board. We will also be showing that How to connect Three Phase & Single Phase Load circuits in a Three Phase Wiring Distribution System in home and commercial electric supply system.
What is Three Phase & Single Phase Power?
In power generation plants, Three Phase power is generated by an electrical generator or alternator. In an alternator, the generated voltage and current by three independent coils in the stator are separated by 120 degrees from each other. The generated power from alternators then transmitted and distributed through transmission and distribution lines to the sub distribution. Both single phase and three phase supply is further distributed by the three single phase transformers or a single unit of three phase transformer (configured in Star “Y” or Delta Connection) installed on the utility pole near the residential or commercial area.
The voltage levels are step-up via step-up transformers for power transmission. In the distribution system, they are again step-down the level of voltage via step-down transformer for further utilization. RCD, MCB, MCCB, CB, RCD, RCBO, Fuses, Switches etc are used as controlling and protective devices in the MDB, DB, Sun & Final Sub circuits. For example,
11kV from the step-down transformer wired in Delta connection via (3 Phase, 3-Wires System) enters the 400V/230V distribution transformer wired in Star “Y” Connection (Three Phase, 4 Wires System).
4.5k-7.2kV from the step-down transformer wired in Delta connection via 3 Phase, 3-Wires System enters the 240V/120V distribution transformer wired in Star Connection (Two Phase, 3 Wires System). For a three phase system, the arrangement can be different for different levels of voltage. We will show the wiring diagram in the next sections of this post.
Three Phase Electrical Wiring Installation in Home – NEC & IEC
How to Wire 3-Phase Electrical Distribution Board & Consumer Unit in Home
In our today electrical wiring installation tutorial, we will show how to wire and install a Three Phase distribution board and Consumer Unit from utility pole to a 3-Phase Energy Meter & 3-Phase Distribution board. We will also be showing that How to connect Three Phase & Single Phase Load circuits in a Three Phase Wiring Distribution System in home and commercial electric supply system.
What is Three Phase & Single Phase Power?
In power generation plants, Three Phase power is generated by an electrical generator or alternator. In an alternator, the generated voltage and current by three independent coils in the stator are separated by 120 degrees from each other. The generated power from alternators then transmitted and distributed through transmission and distribution lines to the sub distribution. Both single phase and three phase supply is further distributed by the three single phase transformers or a single unit of three phase transformer (configured in Star “Y” or Delta Connection) installed on the utility pole near the residential or commercial area.
The voltage levels are step-up via step-up transformers for power transmission. In the distribution system, they are again step-down the level of voltage via step-down transformer for further utilization. RCD, MCB, MCCB, CB, RCD, RCBO, Fuses, Switches etc are used as controlling and protective devices in the MDB, DB, Sun & Final Sub circuits. For example,
11kV from the step-down transformer wired in Delta connection via (3 Phase, 3-Wires System) enters the 400V/230V distribution transformer wired in Star “Y” Connection (Three Phase, 4 Wires System).
4.5k-7.2kV from the step-down transformer wired in Delta connection via 3 Phase, 3-Wires System enters the 240V/120V distribution transformer wired in Star Connection (Two Phase, 3 Wires System). For a three phase system, the arrangement can be different for different levels of voltage. We will show the wiring diagram in the next sections of this post.
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