Air conditioner fuses-do they go in pointed in the same direction
Hi Giovanni - I'm an electrician and can help you with your question.
Fuses are designed to fit specific holders so that they aren't accidentally installed into the wrong holder. This is accomplished by manufacturing fuses that rely on differences in length, diameter, blades, notches, tabs, etc.as determined by the voltage and range of current in amps that the circuit needs. We would never want to install a 100 amp fuse in a holder for a circuit designed to be protected by a 15 amp fuse. As a result, you can not physically install a 100 amp fuse in a fuse holder designed to hold a 15 amp fuse and vice-versa.
The notches like the one on the 250V 40A fuse below do the same thing as described above. The fuse should require only enough force to seat into the spring loaded clamps. Larger fuses require more pressure than smaller sizes. Sometimes, the fuse will fit either way - but this is not always the case. I usually install them so that the label is right-side up - if it doesn't like that orientation, simply flip the fuse. The electrical rating does not change - regardless of position.
I hope this helps & good luck!
May 28, 2012 |