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Post by tonyqj on Dec 4, 2016 22:31:02 GMT
How long will the cable run be from the fuse board to this socket? 10m So that's a round trip of 20m which at 25A would drop a little over 0.5V with 16mm^2 cable. Obviously fuse it at 25A or lower at the fuse board.
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Post by tonyqj on Dec 4, 2016 22:31:50 GMT
This time John beat me
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Post by Gone on Dec 5, 2016 9:52:33 GMT
or to put it another way, your proposed 6mm2 cable (20m total length at 15A) will be almost 1v drop (8% of your power will be lost in the cable)
Added - 25A would have a 1.6V drop (13.3%) which is no good.
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Post by lollygagger on Dec 5, 2016 11:04:40 GMT
If your chargers are USB type, why not fit a USB socket, I believe these are lower rated.
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Post by smileypete on Dec 5, 2016 11:21:55 GMT
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Deleted Member
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Post by Deleted on Dec 5, 2016 13:37:04 GMT
If all you intend to do is charge phones and tablets then you could fit a USB socket instead and avoid using an adaptor. They put out a max of 2.5A per socket at 5V so you could use thinner wiring and fuse accordingly. As it's only one and a bit amps at 12v then spuring off the fridge isn't quite so sinful although still not best practice but less likely to burn you to the waterline than pulling an extra 25A would have been.
Top Cat
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Post by tonyqj on Dec 5, 2016 14:20:00 GMT
If all you intend to do is charge phones and tablets then you could fit a USB socket instead and avoid using an adaptor. They put out a max of 2.5A per socket at 5V so you could use thinner wiring and fuse accordingly. As it's only one and a bit amps at 12v then spuring off the fridge isn't quite so sinful although still not best practice but less likely to burn you to the waterline than pulling an extra 25A would have been. Top Cat Plus, if you do this, at some time in the future no-one is going to plug in something more demanding.
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Post by PaulG2 on Dec 5, 2016 16:04:35 GMT
This time John beat me Well the race is on and here comes John up the backstretch, Tony G is going for the outside...
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Post by lardarse on Dec 5, 2016 20:23:26 GMT
Really grateful for the helpful replies. Only one appliance will be used at any one time i.e. if lap top is plugged in tablet/phone will not be, unless through the laptop. The idea of the cig socket is to do away with having the inverter on just for the lap top for this reason the USB socket idea would not be of use in this instance.
Now! Connecting at the other end. I have no spare outlets on my panel so what alternatives do i have there?
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Post by Mr Stabby on Dec 5, 2016 21:05:57 GMT
bugger I'm having problems hit the home button instead of post and sent my reply into oblivion. cigar lighters are rated at up to 25 amps (cigarette lighters a bit less) what type and rating are you using? Spurring off another circuit is not a good idea. How long is the cable run from socket to distribution panel? (I suspect you are going to need thicker cable) Yep thats why I asked about use. If its just for charging a tablet or a camera battery, I would spur of a he most convinient circuit and 6mm cable would do the job. Bit different if you want to light King Edwards with it!! Agreed, you'd need seriously heavy duty wiring to set fire to a potato.
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Post by PaulG2 on Dec 5, 2016 21:57:16 GMT
Now! Connecting at the other end. I have no spare outlets on my panel so what alternatives do i have there? I'm pretty good at wiring if you need some help. Some of my work....
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Post by IainS on Dec 5, 2016 23:50:44 GMT
Is that before or after?
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Post by PaulG2 on Dec 6, 2016 1:30:34 GMT
Is that before or after? Cheeky plonker, aren't you? And obviously not much of an electrician if you can't recognize a professional wiring job when you see one.
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Post by Mr Stabby on Dec 6, 2016 12:08:35 GMT
Edit, wrong thread
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Post by smileypete on Dec 6, 2016 19:59:51 GMT
Really grateful for the helpful replies. Only one appliance will be used at any one time i.e. if lap top is plugged in tablet/phone will not be, unless through the laptop. The idea of the cig socket is to do away with having the inverter on just for the lap top for this reason the USB socket idea would not be of use in this instance. Now! Connecting at the other end. I have no spare outlets on my panel so what alternatives do i have there? There's many ways of doing it... A couple of typical ways would be fit a panel mounting circuit breaker as mentioned above, or a single blade fuse holder, I quite like these: www.ebay.co.uk/itm/12V-24V-STANDARD-BLADE-IN-LINE-FUSE-HOLDER-UP-TO-30A-WITH-SIDE-SPADE-CONNECTORS-/321425087013Will mean tapping into the feed and return to the existing panel, possibly with ring connectors. If you're not sure about how best to make the crimp connections it could do with a topic of it's own so please do start one and I'll chip in....
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