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 Topic: Mixing 12v LED and Halogen bulbs
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25/3/2015 at 11:22pm
Location: Midlands
Outfit: Mondeo Avondale Gram
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A bulb is a bulb. You can mix and match them as and when you want.
The only time you have to be careful is when there are voltage issues. Like 2x12v bulbs in series from a 24v supply. But in a caravan that wont be an issue.
£14 each sounds rather expensive though.
Make sure they are the correct AC or DC versions.
Some kitchen LED's are 12v but they are usually AC.
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26/3/2015 at 6:45am
Location: None Entered
Outfit: None Entered
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You could buy a full set on e bay for £14.
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alpiner
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26/3/2015 at 6:55am
Location: Derbyshire
Outfit: Elddis accordo Motorhome
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I bought 5 for about what your paying each and they are good quality glass ones.
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26/3/2015 at 10:11am
Location: Gods Own Country
Outfit: vango Nadina
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have a read of this
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26/3/2015 at 6:30pm
Location: Kent
Outfit: Bailey Senator 5 Carolina
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I bought one bulb for 'test' purposes, to compare how bright it is compared with an existing 20w halogen.
It is a 6.5w led 12v but I have no idea whether it is ac or dc rated. How would I tell / can i find out?
I can take the bulb back to the retailer for a full refund if it does not work, I do not like it etc.
It is a well-known electrical high street retailer so I'm reasonably happy that a) its a good quality unit and b) that I can get my money back.
I haven't got the bulb here at the moment, I left it at work but will take a closer look at it tomorrow.
Worrying comments on the other thread though? Has anyone else de-rated their fuse to allow for the massive reduction in current draw for led v halogen? Obviously you could only do this if you went the whole hog and changed all bulbs rather than having an led/halogen mix?
Regards
Defender
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26/3/2015 at 9:04pm
Location: Gods Own Country
Outfit: vango Nadina
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The derating is fairly simple to work out fuses protect the wiring firstly but I'm always happier to have the fuse blowing earlier if a fault occurs
If you have 12v and you know the wattage you can calculate the Max constant draw...
Say you have 180w of load
180w /12v =15amps
So you would have a 20a fuse as a 15a would blow
40w of draw
40w/12v = 3.33a. So you'd fuse at 5a
Side note: never exceed the manufacturers fuse size
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26/3/2015 at 10:04pm
Location: West country
Outfit: Mondeo
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Good lamps have a fuse in them. if you reduce the MCB too much, the MCB will trip before the fuse in the lamp blows plunging you into darkness. The MCB should only need to protect the wiring.
LED lamps have a different colour appearance and mixing them in the same room will really make this apparent. The old lamps will look very yellow in comparison. No problem if you only have the led ones on though. This may be acceptable to you, it is subjective.
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26/3/2015 at 11:58pm
Location: Midlands
Outfit: Mondeo Avondale Gram
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Ive had a play with some of the ebay cheapies. 501 12v car style bulbs.
I left one running in the garden in an old metal biscuit tin for protection.
After 20hours it was flickering, When i checked it, the plastic base had already got brittle and was crumbling away.
OK normally you would not leave it on for 20 hours, But they would have reached the same temperature after an hour or so.
Just poor quality. They were about 99p each. 20 SMD's in blocks of 4. (4 sides + top)
I had some similar ones that were 5 5050 SMD's (1 on each side and 1 on top)
They are still going 3 weeks later. Approx £1.60 each and a bit brighter.
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12/4/2017 at 6:16pm
Location: Derbyshire
Outfit: Elddis accordo Motorhome
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I bought 5 GU4 spotlamps for about 16 quid from ultraleds.co.uk they are good glass ones and are going strong at 3 years old nearly.
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12/4/2017 at 7:21pm
Location: Northumberland
Outfit: Knaus Sudwind 550 TK
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Look here too for bulbs....
MINI IN THE BOX
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Damned if I do...
Damned if I don't!!!!
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12/4/2017 at 10:04pm
Location: East Herts
Outfit: 1992 Elddis Wisp 450CT + X Trail
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Quote: Originally posted by GCMS2012 on 12/4/2017
Look here too for bulbs....
MINI IN THE BOX
The link doesn't seem to be working.
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Best Regards,
Colin
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I was wondering if we could stagger the replacement cycle. 
