When electrics go wrong!!!

[ipf]

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Too easy, I'm out.

Well spotted. ?

 

[David Prosser]

Loose connection

 

[Rockingit]

Loose connection

View attachment 85950 View attachment 85951

......where's the slot?

 

[SparkySy]

Is that 3 phases through 3 separate holes in the metal baseplate?

 

[David Prosser]

Is that 3 phases through 3 separate holes in the metal baseplate?

It's not a metal base.

 

[SparkySy]

Ah that's ok then! Must be my old eyes?

 

[brianmoooore]

Ah that's ok then! Must be my old eyes?

Not just yours, my eyes saw the same.

 

[Dartlec]

Just threw these out during a clear out - only time I ran into melting MCBs on a job, some years ago now.

From memory it was a loose terminal on the busbar so installation not manufacturer's fault, though did put me off the 'cheaper' brands for a good while...

 

[dodger421]

I’ve posted it before but this is what happens when you put 230V through a 110V coil. The coil voltage was applied whenever the machine control was on, so it would easily be sitting at the over voltage for 8 to 10 hours a day. I think it lasted three days before failing.

Physically the contactor looked fine, but you couldn’t manually push the contacts together like you should be able to.

Always always always check the coil voltage as well as the contactor rating, don’t just rummage around the parts cupboard for something that looks similar!

 

[RenatSha]

No idea, but the house was three phase and only 20amps/phase, 20amp MCB on a row of six others all covered by an RCD.

There was a poor connection in this outlet. The clamps in the outlet are loose. The contact has warmed up and the socket has melted!