Monday, 3 March 2014

Outcome for bridged fuses: fire (or replacement)

These bridged fuses have been used for more than 30 years.
This is a disaster waiting to happen.
Less and less people have fuses at home. If you still do, read what follows as you might have bridged fuses and not know it.

When a fuse blows, it means something went wrong with the electrical installation. Unless the problem has been identified and solved, simply replacing the fuses is asking for problems.

When somebody is in the dark because of another of these fuse problems, the temptation will be high to simply replace it. If that person is out of replacements, he will probably bridge it with some electrical wire... this is where it becomes dangerous.

You never know when and how your bridged fuse will burn or blow. They could heat up and start a fire or let the electricity flow. Any other cable or appliance in your home can then start a fire.

What usually happens


  1. Your fuse blows, you're in the dark and have no spare.
  2. You reach for any piece of metallic wire and bridge it.
    Note: You haven't solved any electrical issue. There is one because the fuse blew.
  3. You forget about it (and to replace it)

    ... time passes and you're still unprotected ...
  4. There are now two possible outcomes:
  1. Your electrical installation gets renovated at some point and the electrician tells you you have been living on the edge... for (sometimes) more than 30 years !
  2. Your house burns down (and you wonder why)

 What can I do about it?

  • Check all your fuses, remove them one by one and look for a bridge, somebody might have done it in the past.
    If you find a bridged fuse replace it with a fresh one (or a circuit breaker) immediately
  • If a fuse blows, do not, ever, bridge it. If you need to power the appliances/laps connected to this fuse, you should either move them or take a fuse from somewhere else (where you need it less).
    If you take another one, remember to respect the ratings.