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Neutral Voltage Question

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 mapj1 over 5 years ago

Welcome to the new place, glad you made it OK ?

More importantly, did my answer actually make sense?

3 phase gets more complex, as the currents from the three single phases to some degree will cancel, but the concept remains the same, just the neutral voltage slopes uphill towards the phase with the greatest load (unless phase balance is perfect - then you can cut the neutral wire at both ends and walk off with it to weigh it in for scrap without affecting the overall voltages.)
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0 mapj1 over 5 years ago

Welcome to the new place, glad you made it OK ?

More importantly, did my answer actually make sense?

3 phase gets more complex, as the currents from the three single phases to some degree will cancel, but the concept remains the same, just the neutral voltage slopes uphill towards the phase with the greatest load (unless phase balance is perfect - then you can cut the neutral wire at both ends and walk off with it to weigh it in for scrap without affecting the overall voltages.)
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Neutral Voltage Question

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