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Old 10-12-2019, 02:44 PM   #21
sparkplug
 
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Default Re: Help with electrical wiring.

Quote:
Originally Posted by gth853s View Post
Sparkplug - Any way to know if there's enough left if it's drilled out? Scrap steel is ok, or should I look for solid copper?
Just measure the size of the bolt and how much metal would be left if you drilled a hole big enough to fit it. Then ask yourself if that would be strong enough and whether it would survive multiple connect / disconnects.

Yes - copper would be better, but TBH I think marklg has the best solution of making up a cable.

That, or get a different fuse which fits better.

On a different note, I would seriously consider a VSR (voltage sensitive relay) or a B2B charger as an alternative charging method.

I have a VSR which was about $50 USD

Strange thing with solar is that you try to park in the shade on sunny days

With the combination of VSR and Solar I don't really ever need to worry about power.
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Old 10-12-2019, 03:02 PM   #22
Midwestdrifter
 
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Default Re: Help with electrical wiring.

If you can't find copper, aluminum is much better than steel.
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Old 10-12-2019, 08:52 PM   #23
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Default Re: Help with electrical wiring.

Quote:
Originally Posted by sparkplug View Post
Yes - copper would be better, but TBH I think marklg has the best solution of making up a cable.

That, or get a different fuse which fits better.

On a different note, I would seriously consider a VSR (voltage sensitive relay) or a B2B charger as an alternative charging method.

I have a VSR which was about $50 USD

Strange thing with solar is that you try to park in the shade on sunny days

With the combination of VSR and Solar I don't really ever need to worry about power.
One reason I went with a cable is it was easy to cover it with shrink sleeving. Any metal before the fuse is subject to shorting out with only the protection built into the battery. These batteries can source hundreds of amps for some time before the protection kicks in. That would be exciting.

My poor man's guide to cable making, gleaned from a variety of sources, including these forums, can be found here:

https://sites.google.com/site/marksr...battery-wiring

If someone has any corrections or suggestions to add to that, let me know.

Regards,

Mark

Last edited by marklg; 10-12-2019 at 08:55 PM.
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Old 10-12-2019, 10:54 PM   #24
gth853s
 
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Default Re: Help with electrical wiring.

Thanks for the input guys. I was able to make that fuse work by just drilling it out some. I got the basic wiring done today and everything seems to be working fine. Anyone have experience with the Renogy 170AH battery with a Victron Controller? Should I be using custom settings in the VictronConnect App or just the LiFePo4 preset?

This is all the info the give in the battery manual:

Charge Voltage:14.4 0.2V
Maximum Charge Current:50A
Charge Cut-off Voltage:14.6V
Maximum Continuous Discharge Current:100A
Discharge Cut-off Voltage:≥10V
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