We see all the time black circles
type of fuses that jumps out
once done. Why we don't see
more LED warning fuses?
As we see in automotive.
Is it any aircraft related uniqueness
Thanks a lot
Roman
If a CB pops, it is because the plane is trying to set its self on fire, why would you try and relight this fire by resetting a CB? All blade fuses in my build on a full electric engine with back up everything and an on off switch for everything. Ill diagnose the problem on the ground.
Now for a question to those who have extensive experience with fuse-equipped aircraft. Where do you keep your spare fuses, and how do you keep them organized? I ask because I was sure I had kept a link to a compact fuse holder for the standard automotive fuses - it looked like a compact fuse block. For the life of me I can't find that reference, hence my ask about how you keep your spare fuses organized and easy to access.
As a kind of half & half solution, I bought some resettable c/b's that will fit in a blade fuse holder, though mostly so I could safely bench test electrical systems as I build. Possibly I may fit these in the finished plane (in several years time), but mainly for low power and non-critical things. These have a distinct pop-up tell-tale when they trip, and won't reset while o/l current is still there. The only downside is they are 15mm or so taller than a fuse so they need a little more space, but still relatively cheap compared to a "proper" c/b.
I should have added to my post above... the fewer different amperage ratings of fuses or CB's one has in the airplane, the fewer spare parts one has to stock. A Grumman Cheetah I used to fly had its ash tray filled with glass fuses!
Where did you source these wee beasties? They sound like an interesting compromise perhaps...
This topic quickly digresses into a religious discussion. We each have our opinions as to how best to achieve circuit protection. To each his own.
Where did you source these wee beasties? They sound like an interesting compromise perhaps...
Very interesting thread- especially hints that my own input early on may represent old-school, out of date thinking!
You can save a lot of weight and panel space compared to breakers. The fuse block can be mounted as a drop-down:
The Buss brand fuse blocks are probably the most popular. Example:
https://www.steinair.com/product/12-circuit-fuse-block/
You can save a lot of weight and panel space compared to breakers. The fuse block can be mounted as a drop-down:
No problem with in-flight access.
The Buss brand fuse blocks are probably the most popular. Example:
https://www.steinair.com/product/12-circuit-fuse-block/
You can save a lot of weight and panel space compared to breakers. The fuse block can be mounted as a drop-down:
No problem with in-flight access.
The first time you try to get one of those rascals out, you'll lose all concern about them falling out. They are held in very firmly. I put a drop of ACF50 on mine before I put them in just for a bit of corrosion protection, and they are still hard to remove....
Are there any potential problems due to the fuses being inserted from below, i.e. gravity is going to be working against the friction that is holding the fuses upside down in the block?
...
I'm at 20+ years with just such a set-up in my RV-6. The fuses have always stayed in place. Not definitive just one data point. I used 2 wing-stud camlocks to hold the non-hinged side up. Doing it over, I might consider just using Velcro instead of the camlocks.This drop down fuse block seems like a good idea for gaining access when needed and being out-of-sight the rest of the time.
Are there any potential problems due to the fuses being inserted from below, i.e. gravity is going to be working against the friction that is holding the fuses upside down in the block?
I wonder what sort of latch holds the tray locked when the fuse block is swung up under the panel.
Sorry but I can't help asking... why would you ever want to "fix" a blown fuse by other than replacing it? After finding out why it blew in the first place of course.Is there a way to repair a blown fuse? Is the only way to correctly and safely repair a blown fuse in a home or appliance by replacing it?
For those with fuses - how do you do a preflight?
I’m asking as I’m considering using some Bussmann type units for a dual battery engine bus EFII setup - one bus panel for each “side” of the engine bus. But how do you know a fuse wasn’t blown at shutdown etc? (Unless you use the LED ones, but I assume that means you need power on for your preflight?)
Just rely on the device not working or having fault detection?
If it were a CB it would be obvious. But I like the idea of the compactness and value for money of the fuse blocks.
You can buy blade fuses that have a blown fuse indicator light built in. Your pre-flight would be a visual scan of the fuse panel after powering the electrical system up.
Anyone who's flown with CB's over a decade or so old has had flaky ones in the panel....
... like all of us are, or at least were at some point.A bit confused on the best way to proceed.
Typically in the airlines you are allowed to reset a circuit breaker ONE TIME. Sometimes they do trip for no apparent reason.
.....I have never had a fuse blow for no reason in any application. I have had more than my share of flaky circuit breakers, but generally they are very reliable......