Eddy current clarification

[dave992]

hi all,

What are your thoughts on how the 6231 cables been terminated? Will aluminium cause eddy currents? Thanks

 

[IAmSparkytus!]

I remember working at the large Debenhams in Manchester city centre and they had installed a new sub panel in 600.0 singles on a tray. They entered the existing panel through separate entries of the ferrous panel and it was buzzing like crazy but there was no heat build up.

Surely my 1.5mm and 2.5mm earths going through their own hole will be OK then?

Complete opposite end of the spectrum!

Wonder if my NIC inspector would have hard feelings about it

 

[westward10]

Surely my 1.5mm and 2.5mm earths going through their own hole will be OK then?

Complete opposite end of the spectrum!

Wonder if my NIC inspector would be have hard feelings about it

Your NIC inspector probably doesn't understand the science.

 

[davesparks]

Your NIC inspector doesn't understand

Corrected that for you

 

[bjstar]

The first picture I assume is steel in which case it is wrong. The aluminium panel in the second picture is fine but the lock nuts assuming they are steel are not.

Hi i dont know if this is the right place for this question here goes, can eddy currents be used to to 8dentify diffrent metals? Tia.

 

[davesparks]

Just annoying when you’re a bit of a neat freak with a distribution board and know that taking the earths through their own hole at the top of the board makes it look so much better

Whilst neatness is important you should not be putting form over function.

Putting all the earth's through a separate hole might look neat but it can make the next person to work on that boards job a lot harder.

 

[IAmSparkytus!]

How so?

 

[nicebutdim]

Hi i dont know if this is the right place for this question here goes, can eddy currents be used to to 8dentify diffrent metals? Tia.

I imagine they could, but it doesn't seem an ideal method of identifying materials. The process would require the possession of quite a bit of information and strictly controlled conditions.

 

[Mike Johnson]

How so?

I would imagine by not being able to identify what earth lead applies to what circuit, unless each earth lead is identified/labelled.