UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Goonerak
 
Posts: n/a
Default MCB won't reset

Just had an MCB trip.

It's a 6A MCB with only 1 fluorescent fitting on it. Turned off the switch
to the light and the MCB would not re-set. I then removed the started for
the light and the MCB still won't re-set.

Anyone got an idea what the problem might be?


  #2   Report Post  
Sparks
 
Posts: n/a
Default

Just had an MCB trip.

It's a 6A MCB with only 1 fluorescent fitting on it. Turned off the switch
to the light and the MCB would not re-set. I then removed the started for
the light and the MCB still won't re-set.

Anyone got an idea what the problem might be?


As the switch is off to the light, that rules that fitting out (Unless it
has be wired to switch the neutral, rather then the live!)

If this is the only thing on the circuit, then there must be a cable fault,
or the MCB is faulty.

Does it trip immediately, or is there a delay?

Have you knocked any nails into the wall recently!?

Any other DIY work done recently?

Sparks...


  #3   Report Post  
Aidan
 
Posts: n/a
Default


Swap it with a working MCB. If that trips, you've got a fault.

  #4   Report Post  
Goonerak
 
Posts: n/a
Default


As the switch is off to the light, that rules that fitting out (Unless it
has be wired to switch the neutral, rather then the live!)

If this is the only thing on the circuit, then there must be a cable
fault, or the MCB is faulty.

Does it trip immediately, or is there a delay?

Have you knocked any nails into the wall recently!?

Any other DIY work done recently?


It trips immediately. Was working fine until this evening and I've not done
any DIY work that would affect it.

I guess that means it is probably a faulty MCB. Think I will leave it until
tomorrow before I try another one


  #5   Report Post  
Sparks
 
Posts: n/a
Default

"Goonerak" wrote in message
...

As the switch is off to the light, that rules that fitting out (Unless it
has be wired to switch the neutral, rather then the live!)

If this is the only thing on the circuit, then there must be a cable
fault, or the MCB is faulty.

Does it trip immediately, or is there a delay?

Have you knocked any nails into the wall recently!?

Any other DIY work done recently?


It trips immediately. Was working fine until this evening and I've not
done any DIY work that would affect it.

I guess that means it is probably a faulty MCB. Think I will leave it
until tomorrow before I try another one


Try turning off the main isolator or RCD for this part of the CU, does the
MCB still trip then?

Sparks...




  #6   Report Post  
Frank Erskine
 
Posts: n/a
Default

On Sun, 10 Jul 2005 22:25:47 +0100, "Sparks" wrote:

Just had an MCB trip.

It's a 6A MCB with only 1 fluorescent fitting on it. Turned off the switch
to the light and the MCB would not re-set. I then removed the started for
the light and the MCB still won't re-set.

Anyone got an idea what the problem might be?


As the switch is off to the light, that rules that fitting out (Unless it
has be wired to switch the neutral, rather then the live!)

If this is the only thing on the circuit, then there must be a cable fault,
or the MCB is faulty.

Does it trip immediately, or is there a delay?

Have you knocked any nails into the wall recently!?

Any other DIY work done recently?

Possibly a faulty switch, or the wiring in the switch box. Make sure
there aren't any loose wires in the switch box, such as the incoming
line, which may have jumped out and made contact with the back-box.
You don't state whether or not you have an RCD as well.

--
Frank Erskine
  #7   Report Post  
 
Posts: n/a
Default

Goonerak wrote:
Just had an MCB trip.

It's a 6A MCB with only 1 fluorescent fitting on it. Turned off the switch
to the light and the MCB would not re-set. I then removed the started for
the light and the MCB still won't re-set.

Anyone got an idea what the problem might be?


In 95% of cases it means a fault that draws far more current than the
mcb's rating, simple as that. So faulty wiring.

NT

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
.....Help.....Nokia Digivision 6352 nicam.....Can i some how reset this thing ??? MrDude Electronics Repair 1 May 21st 05 07:04 PM
Nokia Digivision 6352 nicam.....Can i some how reset this thing ??? MrDude Electronics Repair 0 May 21st 05 05:01 PM
.....Help.....Nokia Digivision 6352 nicam.....Can i some how reset this thing ??? MrDude Electronics Repair 0 May 21st 05 04:51 PM
Nokia Digivision 6352 nicam.....Can i some how reset this thing ??? MrDude Electronics Repair 0 May 21st 05 04:44 PM
Water Heater - Do I Need 1 or 2 Hi-Limit Reset Switches? Filipo Home Repair 1 December 18th 04 03:58 PM


All times are GMT +1. The time now is 03:48 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"