13amp fuse 2

[stan72]

why do my 13 amp fuses blow on my site transfomer

 

[davidbeach]

Because they see too much current.

 

[stan72]

but do i keep replacing the fuses or is there a problem with the socket it never happened in any other house ive worked on and the transformer is fine ie not over heating,getting sick of the down time.i have two new ones and an old one and their all blowing their feckin fuses.got to be something simple.stan.

 

[ScottyUK]

High voltage at this location perhaps? Cheap transformers (I use the word in a relative sense) running on the edge of core saturation don't tend to do too well if the voltage is a little high.



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If we learn from our mistakes I'm getting a great education!

 

[MikeHalloran]

Fuses don't blow from current directly; they blow from heat.
The heat normally comes from I^2*R heating of the fusible element due to the current, but may also come from I^2*R heating of the fuse connections, thanks to corrosion and annealing.

If the fuse connections are clean, bright, and tight, and the fuses still blow, you have some other problem.



Mike Halloran
Pembroke Pines, FL, USA

 

[dpc]

You might try measuring the current. Also, if the fuses have been on the shelf for twenty years, you might get some new fuses.



David Castor

http://www.cvoes.com

 

[TheBlacksmith]

Vibration can contribute; machinery, trucks, 100 feet past an airport runway ...

 

[jraef]

When you replaced them, did you replace them with the correct TYPE? Not size, but type. Even if it is 13A, if you replaced the original fuse, which was likely a "time delay" fuse, with one that is not time delay type, it will likely blow as soon as you energize the transformer.

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[waross]

Hire an electrician?

Bill
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"Why not the best?"
Jimmy Carter