fuse disconnect question

[Jide A.]

if you have a fuse disconnect at service and also at the load. which one will trip first?

 

[iwire]

if you have a fuse disconnect at service and also at the load. which one will trip first?

Maybe both, it depends on the trip curves for each fuse and if identical any manufacturing differences.

 

[ggunn]

if you have a fuse disconnect at service and also at the load. which one will trip first?

Since the current is the same everywhere in a series circuit, there is no positional factor to consider. It will be the one that has the lesser tolerance for passed current.

 

[petersonra]

if you have a fuse disconnect at service and also at the load. which one will trip first?

if they are the same brand, model, and size, probably the one that is in the area with a warmer ambient temperature.

but there is no real guarantee of that.

 

[Jraef]

The weakest one.

 

[fifty60]

I would look up the term "Selective Coordination" and try to get some traction from that.