"Ron Hardin" wrote in message
...
Lucky wrote:
I heard switching supplies are not the best choice for radios. But I
don't
know enough about them to really know. So you're putting fuses on the hot
wire {+}coming off the PSU to the radio??
I put a fuse on the hot wire, with amps based on the carrying capacity of
the wire
(not the capacity of the power supply!).
The wire goes upstairs from the basement, and at the upstairs end I run it
into
many fuse blocks, each with tiny fuses (1/4 to 2a) for each of the devices
I
power with it, depending on its needs. The wires that typically run into
coaxial
power plugs have very little capacity before overheating, and you want its
fuse
to blow before it (the particular wire) heats up.
So no short anywhere heats up any wire.
A normally functioning power supply is quite capable of burning down the
house
if run into typical hookup wire without some fusing.
It's unintuitive because the same wire works fine at 120v, but it's amps
that
causes heating, not power, and there's ten times more amps (=100 times
more heating)
at 12v than 120v.
--
Ron Hardin
On the internet, nobody knows you're a jerk.
Ron,
what capacity fuse should I buy for the usual wires that come with the power
adapter tips at Radio Shack if I want to "Hot Guard" the output wires to
power radios like you did? How can I find out it's carrying capacity? Is
1/4 A good?
I think they sell wires with fuse holdes on them right?
Thanks
Lucky