Connect fuse directly to battery terminal?

[hedge]

Can I connect a Mega style fuse directly to the battery terminal with the other end connected to the cable with a bolt? If it blows does the fuse stay in one piece?

I installed new batteries and they are taller and I don't have room for my Blue sea terminal fuse mount anymore.

Is this type of catastrophic fuse even necessary? The wire goes directly to a switch and from there to circuit breakers before any loads so it seems to me it should be pretty well protected. It certainly didn't have a fuse in their from the manufacturer.

[hedge]

The wire goes about two feet to a disconnect switch, then continues from the switch to circuit breakers for the inverter, converter, charge controller.

I may have thought of a way of using the fuse by adding a short cable, like 3" over to an open space between the batteries where I have some vertical room.

I just questioned if it was necessary as the OEM wiring just had one of those 30a auto-resetting circuit breakers and pretty sure it was at least two feet from the battery.

[BFL13]

Is the fuse necessary? if the wire being protected goes into wall, yes for sure. When that wire acts as its own fuse you can have a fire in behind the wall. OTOH a short wire out in the open that melts may not be any worse than what the battery itself does when it "melts."

In cars, the rule is your battery fuse on the wire going to your audio amplifier needs a fuse within 18" of the battery. If the car is in a crash, making the wire to the amplifier in the trunk (say) melt from battery shorting or whatever, they don't want that fire making things even worse. But that 18" of wire at the battery will be its own fuse before it gets to the actual fuse.

[time2roll]

Not really the best IMO. Need to keep the mechanical stress to a minimum.
How many amps?

[BFL13]

I have used ordinary ANL fuses with no "holder" on the positive battery post with the pos wire's lug bolted to the other end of the ANL fuse, no problem. You don't need the "holder" if there is no strain on the fuse.

Actually, with a typical battery fuse, the short length of wire from the battery post to the fuse is unprotected, so having the fuse right at the post is better.