blakep82
|
| posted on 26/3/16 at 03:55 PM |
|
|
Jump leads and battery cables
Can anyone see an issue with this? Jump leads seem cheap. 12m of cable for £15. You couldnt buy 4m of battery cable for that. I bought these jump
leads a few weeks back. Wanted some good quality long leads
Heavy Duty Battery Jump Start Leads Cable 800amp 6m Long Jumpleads Car Van Boost
Could these make good battery cables too?
They say 800a which is a lot, but am I missing something here? Why so cheap?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
|
|
|
|
|
mark chandler
|
| posted on 26/3/16 at 04:27 PM |
|
|
It's what I did, buy some decent crimps and really heavy duty jump leads then chop them up.
|
|
|
sprintB+
|
| posted on 26/3/16 at 04:47 PM |
|
|
Yep, I've done the same, 3-4 years now, no issues. On my other kit I have welding leads as the battery is in the boot and they reached, never
had no issue with them either.
|
|
|
907
|
| posted on 26/3/16 at 05:32 PM |
|
|
Aluminium, and not copper ?
I also imagine it's 800amp just for a moment, and not a rating for continuous flow.
I always cut a bit off my welder earth if I need a battery cable.
Trouble is I can now only weld stuff 300mm away. 
Paul G
|
|
|
blakep82
|
| posted on 26/3/16 at 07:01 PM |
|
|
quote:
Originally posted by 907
Aluminium, and not copper ?
I also imagine it's 800amp just for a moment, and not a rating for continuous flow.
Aluminium not copper? What do you mean? Its copper cable. And arent all battery cables whatever curremt just for a few seconds of cranking? Just a bit
confused now 
Its for a mot'd running drivable landy I bought, which isnt really drivable lol but was cheap! Last time I tried starting it, big sparks fired
out underneath when I connected up the battery. So I expect the positive is shorting. 6m cable will be more than enough, as the battery is in tye
back, plus plenty to make engine earths too
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
|
|
|
steve m
|
| posted on 26/3/16 at 08:23 PM |
|
|
"
Trouble is I can now only weld stuff 300mm away.
Paul G"
hahahahahahahahaha
very funny
Thats was probably spelt wrong, or had some grammer, that the "grammer police have to have a moan at
|
|
|
BenB
|
| posted on 26/3/16 at 08:38 PM |
|
|
I got some cheap ebay jump leads like those. Piece of shit. Super skinny wire (bell wire) coated in very thick insulation. 800 amps my fricking arse.
|
|
|
omega 24 v6
|
| posted on 26/3/16 at 11:21 PM |
|
|
What Ben B said really sums it up.
If it looks wrong it probably is wrong.
|
|
|
907
|
| posted on 27/3/16 at 05:33 AM |
|
|
quote:
Originally posted by blakep82
quote:
Originally posted by 907
Aluminium, and not copper ?
I also imagine it's 800amp just for a moment, and not a rating for continuous flow.
Aluminium not copper? What do you mean? Its copper cable. And arent all battery cables whatever curremt just for a few seconds of cranking? Just a bit
confused now
I'm not saying that your leads are not pure copper, just that they might not be.
Aluminium is a fairly good conductor of electricity, but not as good as copper. The thing is, it's a lot cheaper.
The two metals will also form an alloy when mixed in various quantities. Aircraft aluminium (Dural or Duralumin) is aluminium
with a small percentage of copper added.
Because we are dealing with an expensive and a cheap (relatively speaking) material the temptation is to add a bit of cheap to
make the expensive go further.
A quality welder for instance will have copper inside it, where as a cheap buzz box will have aluminium.
I'm not a "sparks" but as I understand it when an electric motor starts there's a power draw much greater than once the
motor is spinning, so it's those first milliseconds that draws the most and not the "few seconds of cranking".
The one that really get my goat is stuff that looks like copper in the eBay photo but is only copper plated.
Welding earth clamps with copper coloured jaws that are more magnetic than a limpet mine. Grrrrrrrr !
Paul G
|
|
|
cliftyhanger
|
| posted on 27/3/16 at 07:16 AM |
|
|
Yep, look for the cross sectional area of the cables, rather than rely on a figure plucked out of the ether.
35mm2 cable is probably what you want, as a landy will take a bit of cranking.....
Just like those little amps that are 2000w output, but actually 10w rms (at best!)
|
|
|
mark chandler
|
| posted on 27/3/16 at 07:42 AM |
|
|
That's why you need to purchase the heavy duty commercial leads.
|
|
|
