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Thread: Inside DB Wiring

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    Inside DB Wiring

    Hi All,

    I need your assistance regarding bridge peices inside a domestic DB.

    An electrician who wired my house used a 4mm wire on top of the circuit breakers (bridges).
    He also doubled the same wire (4mm) to supply the first circuit breaker on top, then doubled a neutral to supply a neautral bar.
    He told me that, we actually need 6mm to bridge inside the DB. I am confused now. What is the correct wire size to be used inside a DB.
    I want the wiring to be right before another electrician comes for inspection because the current one said he is still busy with his wiremans licence. Eskom need a COC before they can supply my house.

    Another issue is that, a day-night switch was wired through switches. He said, in case a sensor fails, we can control the lights on the switches until we replace the sensor.

    Your assistance is highly appreciated.

    Regards,

    Ishmael

    "Knowledge is power"

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    Quote Originally Posted by Ishmaelmo View Post
    Hi All,

    I need your assistance regarding bridge peices inside a domestic DB.

    An electrician who wired my house used a 4mm wire on top of the circuit breakers (bridges).
    He also doubled the same wire (4mm) to supply the first circuit breaker on top, then doubled a neutral to supply a neautral bar.
    He told me that, we actually need 6mm to bridge inside the DB. I am confused now. What is the correct wire size to be used inside a DB.
    I want the wiring to be right before another electrician comes for inspection because the current one said he is still busy with his wiremans licence. Eskom need a COC before they can supply my house.

    Another issue is that, a day-night switch was wired through switches. He said, in case a sensor fails, we can control the lights on the switches until we replace the sensor.

    Your assistance is highly appreciated.

    Regards,

    Ishmael

    "Knowledge is power"
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  3. #3
    Diamond Member AndyD's Avatar
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    The bridges across the top of the breakers are inadequately sized plus two wires per termination maximum. Tell him to install the right sized wiring and use copper busbar. https://www.cbi-lowvoltage.co.za/med.../detail/99/311

    A day/night sensor can be wired through a separate switch if that's the way you want it.
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    Ishmaelmo (30-Oct-18)

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    Quote Originally Posted by AndyD View Post
    The bridges across the top of the breakers are inadequately sized plus two wires per termination maximum. Tell him to install the right sized wiring and use copper busbar. https://www.cbi-lowvoltage.co.za/med.../detail/99/311

    A day/night sensor can be wired through a separate switch if that's the way you want it.
    Alright! thank you for your advice. I'll talk to him and I saw the busbar on the link you shared.
    The wiring will look nice.
    As for the switch, I'll leave it as it is.

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