Picture Of The Day...

[Lectrician]

Depends on the size of the OCD and the current flowing in the fault (arc). An RCD would have tripped tho. 25mm cable in chock block tho?

As I said, not great way of jointing, but yep, 25mm in term blocks

An RCD may well have tripped, but an RCD on a submain is a sh1te design too

 

[nozspark]

I agree Sparks, although you aswel as I know that any circuit should be designed so that a phase earth fault should operate the OCD.

25mm tails into choc block nice!!

 

[Spark123]

A phase to earth short would probably have operated the OCD, however an arc is a different problem!
The poor joint was the start of this problem.
Didn't know it was a submain
Depends really on the setup, some submains can have RCDs as long as they discriminate i.e. using type S.

 

[ban-all-sheds]

the door is opened/closed very regularly

By deaf and blind people with no sense of smell I suppose...

 

[jeepmadmike]

i've seen holes you could put your fist through in boxes when things have gone bag in a big way! I should have taken a picture of the 240mm ish lead sheath swa which kicked off between phases due to damp, it burnt two cores completely away. on further investigation the OCB protecting it had a fault on the tripping mechanisam..

 

[Steve]

the door is opened/closed very regularly

By deaf and blind people with no sense of smell I suppose...

You find a lot of those working in shops, schools, offices, etc. If it works, leave it alone.