Hell. There were times in my past career when I would not even fuse a 10HP
440/460V motor. I would rather have it burn up than have a fuse blow at an
inopportune time. Example: an emergency ventilator in an explosive
atmosphere. When the LFL (lower flammability limit) reached 7.5% that motor
came on and ran until the environment was again safe or the motor destroyed
itself because of "whatever"!
--
Regards,
Richard Urban
aka Crusty (-: Old B@stard :-)
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!
"Mike Hall (MS-MVP)" wrote in message
...
Tom
A fuse does NOT exist purely to save human life.. the fuses inside a hi-fi
power amplifier or CB or computer power supply are there to protect
circuits.. some will be fast blow, some will be slow blow, and some are
thermal types..
Note also that automotive fuses do NOT exist to save human life.. and if
you had followed any links on the URL given to you, that would have become
patently clear to you too..
--
Mike Hall
MVP - Windows Shell/User
http://dts-l.org/goodpost.htm
"w_tom" wrote in message
...
Why did you provide a URL for circuit protection devices?
Those are not fuses? Did you assume that because it is a
Littelfuse product, then it must be a fuse? Or did you first
review the datasheets before posting? Cited are applications
for circuit protection devices .... which are not fuses.
Circuit protector devices and fuses are not the same
device. You have claims a device called TMOV is a fuse. That
is wrong. Go back and learn about TMOVs ... "available in 14
and 20 mm disc size with and without a monitor lead (to alert
you that the thermal element has opened). The 14 mm parts are
rated to 6kA and the 20 mm parts are rated to 10kA." Do you
claim these "6,000 and 10,000 amp fuses" would stop electronic
damage?
Again, fuses blow after the electronic damage has happened
so that the human is not put at risk. This being basic
electrical knowledge that even a computer assembler should
know.
"Mike Hall (MS-MVP)" wrote:
Take a look at this..
http://www.littelfuse.com/cgi-bin/r....ION=oNm8TFzMb5
Fuses are not just found in domestic, industrial and automotive
power supply lines..