Picture of the week!™

[RF Lighting]

Well folks, it's that time again!

This week, some 1000V insulated cable shears.


A former colleague of mine was doing something particularly stupid.

Here is the result

A 16mm² now fits just nicely

 

[shortcircuit48]

Must have been about 60A down the cable he cut?

 

[ricicle]

Must have been about 60A down the cable he cut?

I think it was a lot more than that!!

 

[RF Lighting]

Dunno, whats the Ipsc for L>N at a domestic cutout?

 

[shortcircuit48]

ricicle

You a welder or what?

 

[Spark123]

It takes a bit more than 60A to pop a service fuse instantly, could have been something daft like 3000A flowing in the circuit for an instant.

 

[ricicle]

ricicle

You a welder or what?

Nope!

 

[Lectrician]

ricicle

You a welder or what?

Shortcircuit?

You a sparky or what




With a name like yours, you should really try to understand what happens during a short circuit

 

[shortcircuit48]

"With a name like yours, you should really try to understand what happens during a short circuit "

Im all ears awaiting your description

 

[baz1968]

 

[shortcircuit48]

Appears I am not going to get an education today.

My postings have been made in a light hearted mode with some knowledge.

The picture show the cutters against a piece of 16mm and my assumption being that this is how they were damaged. This would have been the load current of the circuit and the 60A was a jocular figure as was the reference to welding, as a welder would have a good idea of the effect of different currents.

The comment "With a name like yours, you should really try to understand what happens during a short circuit" can only be retorted to by "you really need to understand how a short circuit happens", certainly not by cutting a single conductor ('') : ('')

 

[bernardgreen]

May not have been a short circuit.

Similar damage could occur if it was a single conductor cut while carrying a large current. The cut ends would arc via the tool and erode themselves and the tool until the gap was large enough to quench the arc.

 

[333rocky333]

A short circuit can easily be caused cutting a single live conductor ,especially if the side of the tool is touching the metal earthed casing or a neutral bar at the same time , which from the pic may have been the case

 

[tim west]

Probably make a good stripping tool now at least for 16mm's

 

[Spark123]

I think he may have cut through the phase and neutral conductor simultaneously