Fitting anderson conector.

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Fitting anderson conector.

Postby ICEUK » 15 Oct 2018, 11:57

Guys. I want to fit a sb50 anderson connector, what awg wire do you recommend and ends for the battery terminals.

I just want to charge the lead bricks faster.

Thx
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Re: Fitting anderson conector.

Postby steves1977uk » 15 Oct 2018, 12:59

AWG 12 would be ok up to 40A for 3ft cables. AWG 10 or 8 would have less volt drop with long cables.

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Re: Fitting anderson conector.

Postby ICEUK » 15 Oct 2018, 14:12

Do i need to put a in line fuse? 50amp?

Thx ssteve
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Re: Fitting anderson conector.

Postby Burgerman » 15 Oct 2018, 14:50

Or 40.
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Re: Fitting anderson conector.

Postby ex-Gooserider » 16 Oct 2018, 01:00

In the US, the standard pins for Anderson SB-50 / PP-75 connectors are sized to use AWG 6 wire. In the UK BM uses 10mm^2, which is roughly equivalent to AWG 7... The chair makers often use AWG 10 or 12, which is IMHO a bit light.

You can use lighter gauge wires, but obviously they won't handle as much load, which might or might not matter...

If using lighter gauge, it can be helpful to stuff some extra short bits of wire into the pin in order to 'fill it up' to about the same as the nominally recommended size wire, as that makes it crimp better. BM recommends soldering the pins, especially if not using a 'factory spec' crimper. See his instructions elsewhere...

On the battery ends, it varies depending on just what sort of terminals the battery has, but basically you need to match the size fasteners on the battery and the size of the wire...

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Re: Fitting anderson conector.

Postby LROBBINS » 16 Oct 2018, 04:06

I think that ICEUK is asking about the charger to battery wires, not the battery to power module. AWG12 is probably adequate, but I think I'd go with AWG10 or 4mm2. SB50 thick-wall pins are available for smaller wires, but if you can't easily get them add enough wire to a mostly fill the pin before swaging and soldering.
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Re: Fitting anderson conector.

Postby dewaj » 16 Oct 2018, 07:55

It Depends(tm)...

(I don't really have much recent experience in low-current applications like this so apologies in advance if it's not really what you had in mind.)

As far as terminals... Might use terminals like these:

4-heavy-wall-lug-5-16.jpg
Heavy wall 5/16inch lug
4-heavy-wall-lug-5-16.jpg (19.39 KiB) Viewed 1562 times


They tend to be quite conservatively rated and do well when properly attached to wire. Tin plate is most common but silver is available. Best termination method is crimp, not solder, and of course it must be clean and crimped with the correct tool. The ring colour on the terminal tells which size crimp die to use. Then tape or heat-shrink the ferrule if it's going somewhere with lots of metal. Burndy makes good terminals of this type. They are used in very high current and high temperature environments, and are thoroughly reliable when terminated correctly.

Hope that's not TMI. Ciao.
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Re: Fitting anderson conector.

Postby shirley_hkg » 17 Oct 2018, 03:21

LROBBINS wrote: SB50 thick-wall pins are available for smaller wires, but if you can't easily get them add enough wire to a mostly fill the pin before swaging and soldering.


# in AWG
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Re: Fitting anderson conector.

Postby Burgerman » 17 Oct 2018, 10:17

The thicker walled ones - 3rd ones down - are heavy enough to crimp alone, and be very secure. The other two are not.
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