Low voltage lights not working


Postby outswinger » Wed Oct 17, 2007 10:25 pm

Can anyone advise please?
We have four 12v 35w spots in our bathroom connected to an extractor fan. Pull the cord, both fan and lights are activated.
Fan is still working lights aren't.
Is this a transformer problem? (output 12v/150va)
The bulbs seem intact and there doesn't appear to be any cabling damage or loose connections. Not sure of rating of connection blocks.
Can I check the output from the transformer? Or am I in the wrong area.
As I work 'away' it's awkward to wait in for a spark. Any ideas before I bite the bullet.
Thanks
outswinger
Posts: 3
Joined: Wed Oct 17, 2007 9:57 pm

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Postby BLAKEY1963 » Thu Oct 18, 2007 8:15 am

[quote="outswinger"]Can anyone advise please?
We have four 12v 35w spots in our bathroom connected to an extractor fan. Pull the cord, both fan and lights are activated.
Fan is still working lights aren't.
Is this a transformer problem? (output 12v/150va)
The bulbs seem intact and there doesn't appear to be any cabling damage or loose connections. Not sure of rating of connection blocks.
Can I check the output from the transformer? Or am I in the wrong area.
As I work 'away' it's awkward to wait in for a spark. Any ideas before I bite the bullet.
Thanks[/quote]

OUTSWINGER
YOUR FOUR 35W X 4 = 140W , SO RATING SEEMS OK
WITH TRANSFORMER VA OF 150.
AS LONG AS CABLES R CONNECTED OK , NO SIGNS OF OVERHEATING , AND LAMPS R SECURELY CONNECTED INTO HOLDERS ,
THEN COULD BE THE OUTPUT ON TRANSFORMER.
A MULTIMETER SET ON AC VOLTS , COULD CHECK THE TRANSFORMER
4 12 VOLTS COMING OUT OF LOW VOLTAGE SIDE.
CAUTION TO B USED AS MAINS VOLTAGE EXISTS ON THE OTHER SIDE OF TRANSFORMER TERMINALS. ALSO CHECK RATING OF TERMINAL BLOCKS.
IF IN DOUBT GET IN YOUR SPARKY.
BLAKEY1963
BLAKEY1963
Posts: 654
Joined: Wed Jun 13, 2007 10:57 pm


Postby outswinger » Thu Oct 18, 2007 12:00 pm

Thanks Blakey1963 for taking the time to respond.

A weekend job for me and my meter then.

Thanks again
Outswinger
outswinger
Posts: 3
Joined: Wed Oct 17, 2007 9:57 pm


Postby outswinger » Sat Oct 20, 2007 5:33 pm

Hi Blakey1963

Just come from the loft....checked out transformer as you suggested no power from 12v output, changed transformer.....bingo..fan AND lights.
Thanks again
outswinger
outswinger
Posts: 3
Joined: Wed Oct 17, 2007 9:57 pm


Postby BLAKEY1963 » Sat Oct 20, 2007 11:33 pm

[quote="outswinger"]Hi Blakey1963

Just come from the loft....checked out transformer as you suggested no power from 12v output, changed transformer.....bingo..fan AND lights.
Thanks again
outswinger[/quote]

outswinger
so pleased 2 hear u sorted problem out , WELL DONE !.

BLAKEY1963
BLAKEY1963
Posts: 654
Joined: Wed Jun 13, 2007 10:57 pm


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