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File:Burnt terminals.JPG

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Burnt_terminals.JPG(640 × 480 pixels, file size: 85 KB, MIME type: image/jpeg)

Summary

Description
English: Burnt screw terminal. As you can see, workers with certificate also can make mistakes.
  • What was the mistake?
  • -Previous qualified specialist had connected old aluminium cable to new copper cable inside screw terminals. After the washing machine worked for six months with this connection, a burning smell became evident inside the apartment. When the apartment owner called me, I hadn't seen such a method of wiring!
  • What was the reason?
  • -There was fresh spackling paste and paint in the stairs, but the electrician didn't want to break into the freshly filled walls to put in a new cable. He left old the aluminium cable between the distribution board and junction box inside the apartment.
Date
Source Own work
Author Dmitry G
Permission
(Reusing this file)
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Other versions

How I solved that problem:

  • Step 1:
Distribution board in USSR apartment building.JPG
Fuse boxes in old house.JPG


It was quite a dangerous operation. I didn't want to break through the wall in the stairs by drilling too long a hole (~30cm) between the apartment and distribution board. When my drill bit got to 25cm, I was sweating, because I was fearful of contacting the phase wires with my drill bit. It took me about two hours to drill the last 5 cm and I was sweating the entire time. Fortunately the hole was drilled correctly and no "live" wires were caught by my drill bit.

  • Step 2:
Distribution board in USSR apartment building after modernisation.JPG
Fuse box fixing is ready.JPG


After installing the fuse box, I connected the phase wire into the main circuit breaker and switched the electricity on. It is now working!

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

File history

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Date/TimeThumbnailDimensionsUserComment
current12:26, 14 April 2010Thumbnail for version as of 12:26, 14 April 2010640 × 480 (85 KB)Dmitry G{{Information |Description={{en|1=Burnt screw terminal. As you can see, workers with certificate also can make mistakes. * What was mistake? * -Previous qualified specialist had connected old aluminium cable to new copper cable inside screw terminals. A
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