Battery in the boot

[redalan1971]

i am running twin 45 dellorto's with k&n's so no i have no air intake pipes.

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[Paul]

welding cable is probably the cheapest, because you are running it over a long distance get some larger stuff than you usully would.<br>
<br>
i used 35mm welding cable for my amps im my other car, it was less than £2 a metre and very flexible.<br>
<br>
Paul

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[Richard]

<br>
where can you get welding cable from ?<br>
<br>
I guess I need something like 12v 200A rated or 240v 10A ?<br>
<br>
35mm - that's quite a bit thicker than standard cable which must only be about 8mm ?

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[Paul]

i got my welding cable from arc welding supplies and repairs in stafford, but loads of places sell it, look in the yellow pages.<br>
<br>
i have no idea what size the standard cable is, but its only about 30cm long, i think you need larger cable for larger distances but im not 100% sure. 35mm welding cable is upto 240A continuous current.<br>
<br>
Paul

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[Jod Clark]

Its popular misconception time again!<br>
<br>
The voltage rating of the cable has absolutely nothing to do with the current capacity.<br>
<br>
Think how many megawatts travel down the alloy cables used on the national grid and convert that into amps. You'll see that its the higher current that needs the thicker cable. Thats why pylons run at kilovolts and this is then stepped-down to useable levels in substations. If pylons carried power at 230V they would need to use copper or silver girders instead of the alloy cables! 10MW travellling down a main power line at 33000 Volts is something in the order of 300Amps, so 50-100mm cabling is fine. 10MW at 230V is a shade under 44000A!<br>
<br>
For a boot to engine bay I would think that 35mm should be the minimum cross-section you should use, I'd pay the extra for some 50mm and budget for a length of decent conduit too, just in case the cable starts to rub!<br>
<br>
Jod

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[adchesney]

Dear All<br>
<br>
I think this is a good idea, may even try it out. I have found this link for cable (what do you think?) - gain a bit more room in the engine bay.<br>
<br>
<!--EZCODE LINK START--><a href="http://www.vehicle-wiring-products.co.u ... <!--EZCODE LINK END--><br>
<br>
All I need now is a cheap source for battery box - any ideas for supply?<br>
<br>
ANDREW<br>
<br>


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[alun n]

Why do you want extra room in the engine bay and what purpose will it serve?<br>
<br>
It won't be very useful when you are going on holiday!

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[Carsreunited]

You could fit a nice vanity case in the area it has vacated, save putting the case in the boot!<br>
<br>
<!--EZCODE LINK START--><a href="http://www.raldes.co.uk/" target="top">www.raldes.co.uk/</a><!--EZCODE LINK END--><br>
<br>
Andrew, go to Batteries on the alphabetical listing down the left hand side. The battery boxes are toward the bottom of that page. Around £20. You pay more for fibreglass for some reason.<br>
<br>
Oh and mines where the rearseat passengers feet would be but then I don't have a rear seat!<br>
<br>
Scott

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[Paul]

andrew, i got my welding cable for about half the price of what vehicle wiring products charge for their starter and welding cable.

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[adchesney]

Dear Paul<br>
<br>
Any chance of the name/address/web of th supplier?<br>
<br>
ANDREW

<p></p><i>Edited by: <A HREF=http://pub52.ezboard.com/bthetriumphdol ... chesney</A> at: 18/4/04 7:09 pm<br></i>

[Paul]

<!--EZCODE AUTOLINK START--><a href="http://www.yell.com/search/DoSearch?sta ... <!--EZCODE AUTOLINK END--><br>
<br>
i rang around a few companies to compare prices, they were one of the cheapest, and they were the closest to me.<br>
<br>
Paul

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[Richard]

<br>
Can you confirm - 50mm equals nearly 2 inches.<br>
<br>
that's one big cable !!<br>
<br>
isn't the standard battery cable about 10mm across ?

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[adchesney]

Dear Richard<br>
<br>
I had the same thought - then remembered school days.<br>
<br>
The cable will be 15mm in dia (15 x pie (3.142) = 50mm (square).<br>
<br>
If I have this wrong, I'm sure somone will advise!!<br>
<br>
ANDREW

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[Richard]

<br>
Not sure which school you went to...<br>
<br>
circumference = pi x diameter<br>
<br>
area = pi x radius squared<br>
<br>
15mm diameter = pi x 7.5 squared = 176mm sq<br>
<br>
to get 50mm sq :-<br>
<br>
root of (50 / 3.14) = 8mm. I'm sure I said that earlier !

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[Jod Clark]

Its the cross sectional area of the conductor that you're measuring, not the diameter of the bundle.<br>
<br>
As a 50mm2 welding cable will have something like 200 strands in it, you need to find the cross sectional area of each strand and add them all together. <br>
<br>
<br>


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