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Grue



Member Since: 29 Apr 2018
Location: New Zealand
Posts: 366

New Zealand 2007 Freelander 2 TD4 SE Auto Sumatra Black
Amps to Starter Motor Solenoid?

Wondered if anyone might know this - been looking at the electrical manual but can't see much.

Got a break in my small connection to the starter motor, looking at a cut out and splice some new wire in, but wondering what sort of draw that has. Only got 10amp wire to hand, but this looks like a fair bit beefier than that.

Thanks

Post #398996 27th Oct 2020 6:47 pm
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p_gill



Member Since: 06 Dec 2011
Location: USA
Posts: 1236

United States 2008 Freelander 2 i6 SE Auto Tambora Flame

Grue,

according to the wiring diagram the starter solenoid has a 40 Amps fuse in series on my 3.2

Its safe to assume less than that.

But if you splice in a wire that can handle 40 Amps for 20 seconds you should be fine

Good Luck

Paul

Post #399008 27th Oct 2020 11:13 pm
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Nodge68



Member Since: 15 Jul 2020
Location: Newquay
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United Kingdom 2009 Freelander 2 TD4 SE Manual Rimini Red
Re: Amps to Starter Motor Solenoid?

Grue wrote:
Wondered if anyone might know this - been looking at the electrical manual but can't see much.

Got a break in my small connection to the starter motor, looking at a cut out and splice some new wire in, but wondering what sort of draw that has. Only got 10amp wire to hand, but this looks like a fair bit beefier than that.

Thanks


According to the wiring diagram, the starter trigger wire is 4.0mm, so considerably more current than a 10 Amp cable will take.
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2009 Rimini Red SE TD4. Gone.
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Post #399044 28th Oct 2020 3:48 pm
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Grue



Member Since: 29 Apr 2018
Location: New Zealand
Posts: 366

New Zealand 2007 Freelander 2 TD4 SE Auto Sumatra Black

Thales guys, apriciate it. Picked up some decent wire and should be on road again soon

Post #399064 29th Oct 2020 12:30 am
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Lightwater



Member Since: 21 Aug 2014
Location: Sydney Northern Beaches
Posts: 4906

Ukraine 2013 Freelander 2 2.0T SE Auto Fuji White

10 amp wire is a meaningless statement.


Let's say you have 40 amp & are using 10awg 5.26mm² wire. 1 metre will have a percentage loss of 0.965% at 25°C at 13.85 volts or 1.113% at 12.0 volts.

Double the length, double the loss.

Or double the amps, double the loss.

Or double the cross sectional area, halve the loss.


Typically a 3% maximum loss is acceptable for less for critical items. Add up compounding losses, like more wire length within a component like a fridge (0.17 volts for my fridge at 3.8 amps)

& the calculated length of wire is the total length of both + & - sections of wire. Procrastination, mankind's greatest labour saving device!

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Post #399065 29th Oct 2020 2:48 am
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