View Single Post
  #31   Report Post  
Posted to sci.electronics.repair,alt.home.repair
Phil Allison[_2_] Phil Allison[_2_] is offline
external usenet poster
 
Posts: 1,716
Default Do thermal fuses fail from old age?


"Jeff Liebermann"

The coffee distillery is double insulated, which means it doesn't need
a ground pin on the power plug. Since a fault can affect either side
of the power line in such a symmertical arrangement, two fuses are
required.


** Horse manure.

One fuse is sufficient to break the circuit in case of current overload.


Note that the thermal fuses also act as an internal short
protector.



** Even worse horse manure.

Thermal fuses act on temperature, not current at all.

The max current rating given by makers is based on self heating to ensure
the fuse stays within temp rating tolerance.



..... Phil