Hi,

As there any potential for any of the loads to be a motor load in the
future?  Electric drill, air pump, etc?

I'm not sure about 12vdc, but in the AC world, there needs to be an
allowance for motor loads on startup. It's been years since I looked at
this, but I think the terminology is "slow blow" fuse.

Just a thought...

Cheers,
Steve

On 07/08/2017 5:34 PM, Neil N wrote:
> Hi all.
>
> I've connected my group 41 aux. battery to an ATO type fuse block with
> a fused 7.5' of #12 AWG wire. I anticipate maximum load at fuse block
> will be 40 Amps.
>
> At 13.8 VDC, even at a 5% voltage drop, online calculators suggest
> that the #12 wire is sufficient to handle up to 50 Amps.
>
> Would it be ok to use a 50 Amp fuse on the wire from battery to fuse block?
>
> A 40 Amp fuse be sufficient, even with all loads on. I will measure
> current draw of each load.
>
> Also, FWIW, an orange murret type wire connector threads nicely onto
> the B+ stud on this type of fuse block. Image link:
> http://www.techspan.ca/images/pageheaders/fusepanel.jpg
>
> Even though the fuse block is installed in front of the glove box, I
> wanted to reduce the risk of that stud inadvertently connecting to
> ground.
>
>
>
> Thanks
>
> Neil.
>
> --
> Neil n
>
> Blog: Vanagons, Westfalia, general <http://tubaneil.blogspot.ca>
>
> 1988 Westy Images <https://picasaweb.google.com/musomuso/New1988Westy>
>
> 1981 Westfalia "Jaco" Images, technical <http://tubaneil.googlepages.com/>
>
> Vanagon-Bus VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>