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Neutral Voltage Question

fiftyhertz
Hi all, 


Hoping someone can help with this, as it bothering me that I dont know this. 


This is quite tricky to explain without an image. Essentially, if we have a circuit supplying one luminaire. The line conductor has a voltage of 230v from earth potential supplying the light. To complete the circuit, on the return leg a neutral is required (<50v from earth potential). Where is the point where the neutral is no longer at mains voltage, is it at the neural terminals? 


Is it a case of the luminaire will "use up" the supplied mains voltage? 


Any assistance is appreciated. 


Thanks
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  • 0
    My drawing is for worst case N-E voltage.

    TN-S or TT is the worst case,  TNC-S will have the Earthed reference closer to the consumer so will give lower N-E voltage.
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  • 0
    My drawing is for worst case N-E voltage.

    TN-S or TT is the worst case,  TNC-S will have the Earthed reference closer to the consumer so will give lower N-E voltage.
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