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Topic Title: Neutral voltage question
Topic Summary:
Created On: 28 March 2019 02:22 PM
Status: Read Only
Linear : Threading : Single : Branch
 Neutral voltage question   - FiftyHertz - 28 March 2019 02:22 PM  
 Neutral voltage question   - mapj1 - 28 March 2019 02:33 PM  
 Neutral voltage question   - Legh - 28 March 2019 02:36 PM  
 Neutral voltage question   - Legh - 28 March 2019 02:38 PM  
 Neutral voltage question   - broadgage - 28 March 2019 02:49 PM  
 Neutral voltage question   - mapj1 - 28 March 2019 02:46 PM  
 Neutral voltage question   - FiftyHertz - 28 March 2019 03:08 PM  
 Neutral voltage question   - Legh - 28 March 2019 04:36 PM  
 Neutral voltage question   - MHRestorations - 28 March 2019 10:34 PM  
 Neutral voltage question   - potential - 28 March 2019 10:42 PM  
 Neutral voltage question   - potential - 29 March 2019 01:45 PM  
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 28 March 2019 10:42 PM
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potential

Posts: 1774
Joined: 01 February 2007

Originally posted by: 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

In comparison to the wiring, which has a very low impedance, the luminaire is a high impedance.
Consequently nearly all the supply voltage will be present at the luminaire.
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