DC can arc at 30V, just takes special circumstances.
When two wires start touching and separate DC can continue the circuit by arcing. This is the primary reason fuses have a voltage rating, so they pop quick enough to sever the circuit before an arc can continue it.
When the ends of each line are big enough (and close enough) to act as capacitor plates, energy will build up and arc to complete the circuit. Big enough is relative, the little metal balls on a blown fuse line (think glass fuse) is generally big enough to act as a capacitor plate, but usually the air gap is too big.
Got a question. Fusing my charge port, isn’t connecting a fuse to a positive wire make it more acceptable to popping mid charge? Or is is safer fusing it to the negative wire, whipped up a diagram of what I’m doing, if I made any mistakes please let me know. What I know so far is the balance wires are correct since I’m rocking two 5s lipos put in series so that gives me 10s
If you get the manufacturer part number from that listing, you can search for them locally.
You can also search for fuses with the same ratings (58V 10A, et cetera).
I’ll make sure not to do that. Good to know, and I’ll plug it into the B- or C- of the BMS?