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Neutral Distributed / Non Distributed

Nick Parker
Explain me the difference between a neutral not distributed and with neutral distributed.


(3 Phase + 1 Neutral) loads -- > Is this termed as distributed neutral?

(1 Phase + 1 Neutral) loads  -- > Is this termed as distributed neutral?

3 Phase, for example motor  --> Non distributed neutral?

2 Phase, for example lighting fixtures -- > Non distributed neutral?,


I would like to apply the relevant equations to find the short circuit at the end of line. That is why this question came up.

e0ad2d78a7db489c6dec116697fc0792-huge-neutral-distributed-vs-non-distributed.png

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    Explain me the difference between a neutral not distributed and with neutral distributed.

    'neutral distributed' simply means you have a N conductor in your circuit. (For the moment I'll ignore the possibility of re-creating an artificial N downstream).


    It's not always obvious from the nature of the load whether N will be present or not - e.g. a supply to a 3-phase motor might include a N not because the motor needs a N but because 230V is needed for some of the controls that drive it. Or someone might include a N just to allow for future changes. Even if it's not used, the fact it's there means it could be involved in a fault.


    (I can't say I recognise your formulas though - is there an "S" missing from the last one?)


        - Andy.
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  • 0
    Explain me the difference between a neutral not distributed and with neutral distributed.

    'neutral distributed' simply means you have a N conductor in your circuit. (For the moment I'll ignore the possibility of re-creating an artificial N downstream).


    It's not always obvious from the nature of the load whether N will be present or not - e.g. a supply to a 3-phase motor might include a N not because the motor needs a N but because 230V is needed for some of the controls that drive it. Or someone might include a N just to allow for future changes. Even if it's not used, the fact it's there means it could be involved in a fault.


    (I can't say I recognise your formulas though - is there an "S" missing from the last one?)


        - Andy.
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