Replacing a fuse rated for 125 v with a 300v - overheating hazard?

[Jermin]

Hello,

I replaced the 125v 1.5amp fuse in the plug end of a string of Xmas
lights with an inline 300v 1.5 amp fuse (the smallest one I could
find). I replaced the fuse because I cut off the plug end of the wire
so I could wire the Xmas lights directly into a wall switch, rather
than plugging into an outlet.

Because the amperage of the fuses is the same, and amperage is what
causes overheating of wires, I'm assuming the string of lights is
equally protected from overheating with the 300v 1.5 amp fuse as with
the 125v 1.5 amp fuse. Is this thinking correct? Or is it critical
that I match the voltage of the original fuse?

--Jermin

 

[Don Bruder]

Hello,

I replaced the 125v 1.5amp fuse in the plug end of a string of Xmas
lights with an inline 300v 1.5 amp fuse (the smallest one I could
find). I replaced the fuse because I cut off the plug end of the wire
so I could wire the Xmas lights directly into a wall switch, rather
than plugging into an outlet.

Because the amperage of the fuses is the same, and amperage is what
causes overheating of wires, I'm assuming the string of lights is
equally protected from overheating with the 300v 1.5 amp fuse as with
the 125v 1.5 amp fuse. Is this thinking correct? Or is it critical
that I match the voltage of the original fuse?

Nah. Match the amps, and either match or exceed the volts, and you're
golden.