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Fuse rating for AC
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ChadTower:

You never need a fuse, technically.  It's a safety measure.

I would think you would sum the amp draws, since they are all drawing individually.  If you have 4 items that draw an average of 1.5A, then you are drawing a total of 6A most of the time, yes?

I could be wrong, as I'm still learning EE stuff, but this one just seems common sense.
Minwah:

--- Quote from: RayB on November 09, 2005, 09:32:21 am ---Would I add them up or average them?

--- End quote ---

Add them up and make sure your fuse is just above the total max current.

Not sure how it is in the US but in the UK (practically) all appliances have their own fuse in the mains plug so you don't generally have to worry.  Multi-way extension leads tend to have a 13A fuse in them as this covers everything.
2600:
Just remember you want to sum the AC current, not the DC current.  Also, you may have to worry about about the initial draw of current which may be higher then the sums you added.  This will cause you to blow your fuse everytime you flip your switch.



Personally, I would just add a surge protector for your situation.


Edit: Rayb, I always read about your project, but still get confused on what you are doing.  Like this example, you are looking for a fuse rating for a JAMMA cab, but you are building a MAME cabinet.  Correct?


RayB:

--- Quote from: 2600 on November 09, 2005, 09:59:04 am ---Edit: Rayb, I always read about your project, but still get confused on what you are doing.
--- End quote ---
ChadTower:

--- Quote from: 2600 on November 09, 2005, 09:59:04 am ---h may be higher then the sums you added.
--- End quote ---
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