Home > Technical > Jump leads |
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LinDens90XS Member Since: 24 Feb 2012 Location: Merseyside Posts: 83 |
Thanks for the reply's, thought I would be OK but nice to have it confirmed. Regards
Dennis. |
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25th Jul 2013 11:43am |
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ppad Member Since: 16 Nov 2012 Location: now, UK S Coast Posts: 223 |
Jump Leads ....
Is there a freebie article kicking around on how / what to install wrt an Anderson connection at a convenient point? The LRM article is out of print on this subject. I'm just the average dude here..I can figure connection on car (bumper, wherever) and on jump lead... but cannot believe that the car end is 'live' at all times, so there must also be a heavy duty switch.. and so on. So, what exactly, to do? Sold the much modified 110 2.8, in Oz Brought the 90 home from Switzerland ... |
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14th Aug 2013 2:38pm |
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mobilecentre Member Since: 05 Mar 2012 Location: Evesham Posts: 645 |
Have a read of this article here published in LRM which covers Andersons and cheap jump leads / booster cables
http://www.mobilecentre.co.uk/images/Data_...cables.pdf |
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14th Aug 2013 3:04pm |
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udderlyoffroad Member Since: 18 Jul 2011 Location: Bristol Posts: 124 |
If you follow the advice in the article, then the Anderson connector will be very well protected and the risk should be minimal. If you want to fit a heavy duty isolator switch, these are available, but don't fit the cheap ones you see in 'blister packs' in car accessory shops. Something like this would be more suitable: http://www.thetoolboxshop.com/0-605-60-250...-2317.html Real trucks don't have spark plugs |
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14th Aug 2013 3:45pm |
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mobilecentre Member Since: 05 Mar 2012 Location: Evesham Posts: 645 |
We fit a 300A inline fuse for protection or exactly as ufferlyoffroad says a decent isolator
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14th Aug 2013 3:57pm |
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lambert.the.farmer Member Since: 11 Apr 2012 Location: harrogate Posts: 2006 |
Bit of a hijacking but would there be any negative effects if one used dinse connectors instead of Anderson ones ie the individual twist ones on welders, to make a remote connection point? Rhubarb and custard let fly with their secret weapon.
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15th Aug 2013 4:59am |
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mobilecentre Member Since: 05 Mar 2012 Location: Evesham Posts: 645 |
I do not really see any the appropriate connector to suit say 35mm2 cable will fine
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15th Aug 2013 7:10am |
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david mitchell Member Since: 01 Jul 2012 Location: Meath Posts: 418 |
any feedback on this product from flatdog? www.flatdoguk.com/flatdog-battery-booster-kit---4m~833. i was thinking of installing it in my td5. any feedback is most welcome
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4th Oct 2013 1:18pm |
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Johnnyb0 Member Since: 26 Jun 2013 Location: Ulster Posts: 45 |
Question from a electrically uneducated owner. I see that cables are rated at say 200 amps but sparks fit fuses of a higher rating? Surely the fuse should be rated lower ? Then the fuse would blow before any damage to cables? Am I looking at this too simplistically or am I just confoosed ? I see that winches can draw a high amperage but the cables recommended are below this? Can anyone explain this to a numpty? Thanks.
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7th Dec 2013 12:40am |
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BigRuss Member Since: 15 May 2010 Location: Norfolk Posts: 2785 |
The fuse is there to protect the system, so the fuse should blow before the cables melt.
So the short answer is your right the fuse should be lower than the cable rating Russell 2011MY 110 XS USW Black |
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7th Dec 2013 10:13am |
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leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8580 |
Electric cables have different current ratings dependent on many different factors.
There is a continuous current rating, ratings for cables in 'open air' alongside another cable, enclosed in conduit, then there is cycle or boost rating. To give an example 35mm2 welding cable is rated at 225 amps whereas at 20% cycle over a 5 minute period it is rated at 505 amps. A genuine Anderson SB175 connector is rated at 175 amps continuous or up to 1,000 amps for about 8 seconds. Now a winch for instance can be rated at a maximum of say 400-500 amps. To have a cable rated for 400-500 amps continuously you would need cable of CSA say of 95-120 mm2. Now fitting cable of that size apart from cost, weight etc you would also have problems with bend radius of cable. Winches? If you are doing occasional self recovery winching then cables of 35mm2 are normally fitted. For winch challenge events, those boys use 50 or 70mm2 cable. Logic being occasional use not likely to get stuck where you need full power of winch, can rest the winch (i.e. winch in short bursts) or better still double line which halves the load on the winch and the current draw, OK doubles time involved. Challenge winching you will most likely be using full power of the winch, in a single line pull, time of the essence and doing it often. Hence you need the larger size cable. Hope that makes sense. Just be careful of some of the claims made on various auction sites. I have seen 800 amp rated jump leads made from 8mm2 cable before now. Compare that with the 20% cycle of 505 amps for 35mm2 cable! There are also lots of copies of the genuine Anderson connectors using the same sort of coding. Have looked at the actual contacts and they are as rough as a dogs backside compared to the genuine ones. This means point contacts, arcing. pitting etc which is not good news Brendan |
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7th Dec 2013 11:30am |
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BigRuss Member Since: 15 May 2010 Location: Norfolk Posts: 2785 |
I found this to be quite a good place for Anderson connectors
http://www.torberry.co.uk/superbasket/cate...Connectors Russell 2011MY 110 XS USW Black |
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7th Dec 2013 6:10pm |
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Johnnyb0 Member Since: 26 Jun 2013 Location: Ulster Posts: 45 |
Thanks Big Russ and Leeds for the explanations. That's a great help. All becomes clear at last.
I'm going to fit Anderson connectors on front of the passenger seat box. Stepping outside my comfort zone or what Wish me luck..... |
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7th Dec 2013 7:24pm |
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leeds Member Since: 28 Dec 2009 Location: West Yorkshire Posts: 8580 |
Fitting an Anderson connector to front of seat box?
Two main choices, surface mount on front of the box or bolt it to underside of the front lip so that it sticks out of the front panel. Advantage of surface mount is that smaller holes are required to be drilled in seat box, second method all the cables stay within the seat box. Take time in working out your positioning. Check that you can connect the second Anderson connector in, can you close the door when connected. Is closing the door important when connected? Purist will argue that the connector should be isolated by a switch. Yes you can but what you are isolating is about 6 inches of cable. Inline fuse or not? Standard jump leads are connected battery to battery without an inline fuse. Connecting compressors etc put inline fuse between compressor and Anderson connector. Get some dust covers to keep contacts clean Brendan |
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7th Dec 2013 7:57pm |
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