Fuse Holder
Holds one thin wire in an electrical line. If too much current flows, the wire melts and the line opens. The wire is used up; the holder isn't.
Crafting
C C C
W W
C C C
C is Ceramic and W is Copper Wire. The holder is placed empty.
Fitting a wire
Right-click the holder with a Fine Wire of any metal: "Fuse wire fitted." An empty or blown holder conducts nothing. Fine wire comes from the Wire Drawer.
The wire's metal is the fuse's rating
Two figures, both from the metal:
- Rating: the current it carries without warming at all.
- Melting point: how much overload it stands before it goes.
Over its rating the wire heats up, and a thin wire heats fast. It settles at a temperature that depends on how far over it is. If that's above its melting point, it blows, usually within a second or two.
| Wire | Carries forever | Blows above about |
|---|---|---|
| Lead | 1.3 A | 1.9 A |
| Steel | 1.6 A | 4.5 A |
| Tin | 2.4 A | 2.8 A |
| Iron | 2.7 A | 5.9 A |
| Zinc | 4.5 A | 5.3 A |
| Brass | 4.5 A | 6.2 A |
| Gold | 11.2 A | 13.0 A |
| Copper | 16 A | 18 A |
The second column is for a room at 20 Tu. In the Nether, where the room is hotter, each fuse blows a little sooner.
Low-melting metals (tin, lead, zinc) blow sharply, just past their rating. High-melting ones carry a long way over theirs first.
Picking one
A fuse should blow before the thing it protects is harmed. A Copper Cable carries 4 A, so:
- Tin (blows near 2.8 A) or zinc (5.3 A, a little over) protects copper cable.
- Copper wire carries 16 A and won't protect copper cable at all.
Notes
- Blowing is the fuse doing its job. It's one of the few things in Feedback that's meant to be used up.
- The holder itself never wears out.
- Want something you can reset? See the Breaker.