What fuse size, a general rule.

[DaveCrampton]

As a general rule I was told to calculate the current consumption and then take the next size up. This was for three pin mains electric plugs.
I have also heard of people using the 'Engineer's Rule Of Thumb' calculate the size, and double the actual size.

I'm going to be buying and fitting a Renogy DCC50S 50amp DC to DC booster for my leisure battery. The battery size is not relevant here as I want to future proof it, and the 30-50amp upgrade is nothing.

So should I put a 60amp midi fuse in on each end or 100amp midi fuse in each end?


Thanks.

 

[Dellmassive]

the fuse is there to protect the cable, so the fuse installed depends on the gauge of the cable installed.


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the fuse requirements for the 30A and 50A version are detailed in the user guide. . .

https://store-nkm2yhe9h8.mybigcommerce.com/content/RBC3050D1S-Manual.pdf

https://store-nkm2yhe9h8.mybigcommerce.com/content/files/RBC3050D1S%20Fuse%20Installation%20Instructions.pdf

https://uk.renogy.com/content/files/Manuals/RCM-BT2-G1%20Manual.pdf

https://store-fhnch.mybigcommerce.com/content/RMS-DCDC/MSDCDC-Manual.pdf

 

[Dellmassive]

Dellmassive’s "How I Done It" blogs.

-- Dellmassive`s -- "How I Done It" -- thread -- ************************************************** Dellmassive`s -- "how I Done It" -- Thread ************************************************** Kit List And Stuff -- How I Done It & What I Use --...

www.t6forum.com

 

[Dellmassive]

[Guide] DC-DC Charger (for leisure battery) -- How I Done It --

Not DC-DC exactly . . . but it looks like this MPPT will: reverse charge the starter battery @1A, run lithium, and have LTD ! ***************************** The Voltronic DUO - https://amzn.to/2Gvj3xH "The MPP-series controllers feature a second output so that some of the solar power can...

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[drinfinity]

I’ve just bought one of these and am building it in now. It comes with one very grand looking 60A fuse.

 

[DXX]

Fuses - 12 Volt Planet Knowledge Centre

Fuses - 12 Volt Planet Knowledge Centre

www.12voltplanet.co.uk