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DC Fuse and breaker Sizing and Placement

DC Fuse and breaker Sizing and Placement 2022-05-22

To get the paper, click on the orange
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button at the top of the page

The attached presentation gives the fundamentals for picking fuse/breaker sizes and describes where in the circuit they should be placed.

You can download the presentation by clicking the orange "Go to download" button in the upper right of this screen.

1/23/2021 - Did a refresh of the paper that updated most of the diagrams and added additional information.
3/6/2021 - Added information about fuse types and discussion of Fuses vs Breakers.
7/30/2021 - Added discussion about the various ratings for a fuse or breaker.
7/30/2021 - Added charts showing the AIC ratings of various fuse types.
3/20/22 - Made critical update about the usage of Directional Breakers.
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FilterGuy
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Very clear with diagrams and explanations. I did learn all these rules as I was designing and building, but this summarises so well.
Very useful and well written resource.
Thanks for the great info, really helped me with a few things I was wondering about. Cheers.
This is amazing. Author should get some credit for this on the first page of the PDF file.
Very helpful and concise. Thank you FilterGuy. Back in the 90s I remember PV system batteries almost never being fused. I never understood why not. Always found paralleled L16s w/o fuses very scary.
This really helped me figure out where I needed my fuses. Still a lot to learn!
Very helpful.
Cleared my doubts on fuses, thank you!
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