DC fuses for an inverter?

[John in Santa Cruz]

what about these battery terminal fuses? I like the idea of the fuse being RIGHT at the battery so any wiring shorts would pop it.
https://www.bluesea.com/products/519...k_-_30_to_300A

i found this datasheet on them
https://www.electricalhub.com/media/...s_blue_sea.pdf

[BobG]

I think your fusing at the battery is a good.

My batteries came with 300amp MEGA fuses built in to them. They are serviceable.

I also have a 300amp T fuse at the battery switch that sends power to the inverter and a smaller 35amp fuse that sends power to the DC panel.

[hugh]

Yeah, MRBF fuses are the ones I've been leaning towards using. They have a 10,000AIC rating, which is less than class-T, but that seems like a reasonable compromise to have the fuse right at the battery.

[John in Santa Cruz]

Originally Posted by hugh

Yeah, MRBF fuses are the ones I've been leaning towards using. They have a 10,000AIC rating, which is less than class-T, but that seems like a reasonable compromise to have the fuse right at the battery.

especially because supposedly the BMS shuts off the battery at around 150A each (I have two in parallel, so 300A total).

[DGLP]

Originally Posted by John in Santa Cruz

what about these battery terminal fuses? I like the idea of the fuse being RIGHT at the battery so any wiring shorts would pop it.
https://www.bluesea.com/products/519...k_-_30_to_300A

i found this datasheet on them
https://www.electricalhub.com/media/...s_blue_sea.pdf

John, this is a good website that discusses terminal fuses. Although it's focused on marine standards, it's worth a read. Good luck!

https://marinehowto.com/battery-bank...nt-protection/

[DGLP]

Originally Posted by Perry Butler

I didn't save any links last summer, but here are a couple I quickly found:

Fuses

Fuse Types? Why is it a big deal?

I investigated many inverters (GoPower, Renogy, Victron, etc), called if possible, and at least a couple recommended a T fuse with lithium batteries to protect our camper. I do know when I talked to AM Solar last summer about adding an inverter one of the first questions they had was "Do you have lithium batteries?" They explained about the massive power lithium can provide if there is an inverter short. Aside from the cost there is better protection using a T fuse, so that's what I installed.
I realize there are many opinions on forums, but when AM Solar told me about a T fuse I said, "Why not." I'm sure if you search well enough you can find documented instances where an ANL fuse did not prevent component loss or runaway lithium fires.

I chose a GoWise 1500 pure sine wave inverter, recommended by Will Prowse at the time, and it has worked perfectly for our needs, mainly a toaster.

I spent hours and hours investigating inverters and fusing, so I'm comfortable with my choice. I just know from that research last year I would definitely have a T fuse protecting my camper investment, and do, especially if I had lithium.

Enjoy,

Perry

Good points,, Perry. Rod Collins, in his "Marine How To" site, agrees with your choice, He also posts great information on numerous topics relevant to this post such as fuse quality, fusing and termination voltage drop, wire termination, winter battery storage and self-discharge. And inverter efficiency is another topic he brings to light:

https://marinehowto.com/a-look-at-in...nefficiencies/

I'm in Maplewood and have been looking for local sources for wiring, fuses, etcetera. I came across this distributor in Chanhassen. They stock some quality products. Delivery is pricey though and the many quality items are out of stock:

https://www.waytekwire.com