"tommaz" wrote in message
ups.com...
Just so I'm clear - if I use the 12 volt leisure battery in my caravan
(hence the restricted space), then all I have to do is wire the TV and
digibox direct to the 12 volt supply?

Your LCD and digibox will likely want a very stable 12V supply, and a
battery will not offer that. Unless the appliances are explicity designed
for battery use, forget it. They will simply malfunction when the battery
starts to deplete, or worse it may cause damage.

Do I need to put any in-line fuses in place first or will the TV and
box just take as much current as they need?


No offence, but by asking a question like that you demostrate that you
really should leave things as they are and forget about experimenting with
expensive electronic appliances!

Fuses are not current limiters the way you think, they are a failsafe device
to protect an appliance when either the power supply fails or the device
itself develops a fault. They prevent catastrophic damage in the event of a
short or fault condition and do not 'limit' current to a normally working
device.

Yes, you most certainly should use a fuse inline if you're going to
experimentvlike this! A 5 Amp fast blow fuse should be OK, but if you create
a situation where the fuse blows, it's unlikely either the LCD or the
digibox will survive anyway.

Dave