sythai

-
Arms
Evening all...


Customer has flickering lights and seems to get worst when airsource heat pump is fired up.

Have checked all connnections are tight, tails etc, all ok ?

Could it be the incoming supply maybe, it's at the end of the line and overhead or am I missing something ?

Sy
 
Last edited:
Well those heat pumps use a lot of juice, and as you are at the end of line, volt drop may be an issue.

Have you measured the voltage at the light fittings when the pump is running???
 
had similar problem with a client. fluorescent lights in his offices were flickering. turned out he was running on 205 volts. only solution was a new supply from new tranny at nearest pole. cost him a bomb
 
Hi sythai,
Have you checked the fuse at the head?......I've had a few of these where the fuse/contacts overheat and discolours and softens the contacts.....bad contact and inconsistent supply the result.It would be apparent under load as the fuse holder will get noticably warm.....apologies if this is in egg sucking territory.
 
Hi sythai,
Have you checked the fuse at the head?......I've had a few of these where the fuse/contacts overheat and discolours and softens the contacts.....bad contact and inconsistent supply the result.It would be apparent under load as the fuse holder will get noticably warm.....apologies if this is in egg sucking territory.


ah- over here that's part of the supply
 
Saw this a while back (had been happening for months)...turned out to be a loose neutral connection on the supply into the meter or a Henley (I wasn't there to see exactly what). DNO call out, free of charge fix.
 
Can imagine they will try and deny all knowledge..... :(

Henleys, tails all good and tight that was my first thought loose neutral. Main fuse looked in good nick and wasn't getting warm, but might consider swapping for a new one which my kind friend at the DNO has given a few of (luckily someone has already cut the seals)
 
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Thread starter

sythai

Arms
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Devon, United Kingdom
What type of forum member are you?
Practising Electrician (Qualified - Domestic or Commercial etc)

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Any thoughts please.... flickering supply
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Australia
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sythai,
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hopkins85,
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