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post #11 of 20 (permalink) Old 20-02-2013, 18:37
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Yes Karl, 200A fuse is OK.

As for which batteries - well the answer lies in the size of the cables linking the leisure batteries to the EBL and the capability of the relay that is operated by the EBL when the engine is started.
The relay connects the engine battery and alternator to the leisure batteries to charge the latter.

As in my original post - seriously thick and seriously capable.

Do you really need to go to all this trouble just for a hairdryer?

One suggestion is to run the gas blown air heating and connect an elephants trunk to one of the outlets and use that as a hairdryer.

Not as daft as it sounds - cost? Couple of quid at the most!
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post #12 of 20 (permalink) Old 20-02-2013, 18:55
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Of course you can make this system work but it is hardly the best way of doing the job. If you have blown air heating why not make an adaptor to connect the output of one of the vents to the hairdryer? Anything that requires significant power needs to be gas or mains electric operated if possible.
You will probably find that if you are taking 200A from your battery regularly it will have a short life. 20A is a more reasonable maximum.
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post #13 of 20 (permalink) Old 20-02-2013, 19:05
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One suggestion is to run the gas blown air heating and connect an elephants trunk to one of the outlets and use that as a hairdryer.

Not as daft as it sounds - cost? Couple of quid at the most!


I just said that SafariBoy!

Glad that somebody agrees with me
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post #14 of 20 (permalink) Old 20-02-2013, 19:11
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Quote:
Originally Posted by safariboy
Of course you can make this system work but it is hardly the best way of doing the job. If you have blown air heating why not make an adaptor to connect the output of one of the vents to the hairdryer? Anything that requires significant power needs to be gas or mains electric operated if possible.
You will probably find that if you are taking 200A from your battery regularly it will have a short life. 20A is a more reasonable maximum.
Depends on the size of your battery bank

Eddie

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post #15 of 20 (permalink) Old 20-02-2013, 19:13
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Quote:
Originally Posted by kbsserv
Thanks for the feedback guys,

so if i'm drawing 186 amps ,using a 200amp fuse be ok?




also is it best to connect to van starter battery or habitation batteries?

karl
I bought this one, you can specify the size of the fuse to be included. price is a fraction of the likes of RoadPro
http://www.ebay.co.uk/itm/ANL-FUSE-H...item3a60cd6882

Realistically your leisure batteries are a no go, not enough capacity and if you connect to the engine battery you may need to uprate your alternator. Do you know it's output now?

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post #16 of 20 (permalink) Old 20-02-2013, 19:32
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I think the alternator on a Fiat X250 with Air Conditioning is 140Amp.

A hair-dryer running at 1500 Watts is going to be comparable to that (without doing the maths).

We used ours most days for about 6-7 months (not required in Greece!) without any issue at all. You'll find the revs increase on tickover as the power is drawn, but that isn't an issue and is just the engine management sensing the battery is under heavy load and compensating.

Motorhoming is all about compromises - but we all choose which compromise we want to make. We've never had a TV in a van before, certainly never consider a satellite system.

You can install a hairdryer inverter system for under £170. The inverter may have a 3 year warranty and will always be saleable and have a value after its use is no longer required - just like a gaslow kit etc.

http://www.ebay.co.uk/itm/400314143451
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post #17 of 20 (permalink) Old 20-02-2013, 19:38 Thread Starter
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no don't know alternater ouput its a 2005 fiat with air con.

I had another idea, we will have two new 110ah batts, which means i have the orginal batt spare 80ahr gel.

I also have a seperate mains 20amp charger from old van.

so what if i connect inverter to old batt, we may only need to use dryer say twice before we have some hook up which could then charge batt with inverter connected.

also batt & inverter would be next to each other.
also thought about buying 1000watt hairdryer.


I answer to the question about is it really worth it, well its better than ear ache

Karl
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post #18 of 20 (permalink) Old 20-02-2013, 19:45 Thread Starter
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addie thats the same inverter i have bought, also our van is x244
not x250



karl
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post #19 of 20 (permalink) Old 21-02-2013, 23:43
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A little tip Karl


Andy
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post #20 of 20 (permalink) Old 22-02-2013, 00:20
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Karl.

1000W is 4A at 240V but 83.33A at 12V (more because of inefficiency in the inverter).

1200W ain't that much different at 240V but is >100A at 12V.

Batteries of the type fitted in MHs simply don't like that sort of current.

An 80Ah battery will last about a minute (perhaps 2!) before the voltage drops below the inverter minimum.

As I said before, a visit to the hair salon will be a] cheaper and b] more practicable.
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