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Subject Topic: TV 12v or 240v
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02/7/2012 at 1:04am
 Location: Tamworth Staffs
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Is there a problem with running the TV in my motorhome on 12v when hooked up to the mains as the norm? As this would free up the 240v socket for other things.


02/7/2012 at 8:58am
 Location: West Midlands
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This should be fine, some TV's are 12v only and don't give the option.

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Tony C


02/7/2012 at 9:21am
 Location: Tamworth Staffs
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Thanks for that, I couldn't see a problem but you've put my mind at rest.


02/7/2012 at 9:51am
 Location: Lancashire
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ok for use in any motorhome or caravan but some 12v tv's can be spoiled if you use a generator.

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the only silly question is the one you do not ask.


02/7/2012 at 10:08am
 Location: Cambs
 Outfit: Tin tent diddy tent BIG tent
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Quote: Originally posted by michael on 02/7/2012
ok for use in any motorhome or caravan but some 12v tv's can be spoiled if you use a generator.


Could you put a few details into that Michael as I thought it was more of an issue with some generators not producing a clean sine wave on AC power rather than 12V DC

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'A sure cure for sea-sickness is to sit under a tree'


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02/7/2012 at 10:29am
 Location: Tamworth Staffs
 Outfit: Knaus Sun TI
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Thanks for the reply's Birder99 and Michael. I never use a Generator but I will bear that in mind in case I do in the future. Thanks again all.


02/7/2012 at 10:34am
 Location: Lancashire
 Outfit: Caravan now Sold
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Could you put a few details into that Michael as I thought it was more of an issue with some generators not producing a clean sine wave on AC power rather than 12V DC

i read one time that a generator could (and i say could) give off a spike and any 12 volt items in use at that time may be damaged ie.tv ,radio.mainly from a cheap type.you can buy something to protect you from this.one newish caravan i read about had to have the 12 volt burned wiring loom refitted at his expence due to generator use. 

as i do not have one i can not tell you more.



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the only silly question is the one you do not ask.


02/7/2012 at 10:54am
 Location: None Entered
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are caravan looms not surge protected anyway? that could feasibly happen from any power source although i agree the risk may be increased on a generator.

if not i am sure i saw 12v surge protected adaptors on ebay for a few quid from the far east.


02/7/2012 at 2:09pm
 Location: Cambs
 Outfit: Tin tent diddy tent BIG tent
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I still don't understand... To get a 12V loom to burn or even melt would take a very high current which would blow any fuses immediately and certainly before the loom burnt. I guess if you connected a big inverter to an non fused outlet and expected it to throw out enough to power a microwave or similar then you would have a few problems. I know some leds don't like to get hit with high voltages but the 12V TV's I have seen have a voltage regulator either in the case or in the 12V lead which is also fused. I think I must be missing something somewhere.

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'A sure cure for sea-sickness is to sit under a tree'


02/7/2012 at 2:37pm
 Location: Lancashire
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see generators

http://www.a-tconsulting.co.uk/caravan_tech/no_mains.html



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the only silly question is the one you do not ask.


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02/7/2012 at 3:50pm
 Location: Cambs
 Outfit: Tin tent diddy tent BIG tent
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Ah, that article is talking about some generators damaging the switch mode charger not the loom by having AC that is varying in frequency and voltage. The OP was talking about powering TV off 12V whilst connected to mains, not to a generators AC output. There is no way would I connect my big generator to my caravan but I am quite happy with my inverter generator so long as it is allowed to warm up before connecting the mains cable to the caravan.

In answer to OP I can see no reason not to use the 12V supply for the TV and leave the mains for other devices. Michael's comment would apply to simply connecting a generator to the caravans main inlet regardless of a 12V TV being used. Most modern inverter generators also come with a 12V outlet specifically for battery charging.



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'A sure cure for sea-sickness is to sit under a tree'


02/7/2012 at 4:07pm
 Location: Lancashire
 Outfit: Caravan now Sold
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Quote: Originally posted by Ian29 on 02/7/2012


Is there a problem with running the TV in my motorhome on 12v when hooked up to the mains as the norm? As this would free up the 240v socket for other things.

i was just trying to give a warning if not on EHU and using a generator instead as some motorhomes and caravans do.

 

 

 

 

 



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the only silly question is the one you do not ask.


02/7/2012 at 4:31pm
 Location: Cambs
 Outfit: Tin tent diddy tent BIG tent
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No problem Michael, I was simply confused as to what you were getting at.

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'A sure cure for sea-sickness is to sit under a tree'


02/7/2012 at 4:35pm
 Location: Lancashire
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17 ok

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the only silly question is the one you do not ask.


02/7/2012 at 10:04pm
 Location: Tamworth Staffs
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Wow! Fantastic response to my question. Thanks everyone for your input you've all been most helpful


02/7/2012 at 10:41pm
 Location: Lancashire
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your most welcome from all.17

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the only silly question is the one you do not ask.



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