Post History
We have ESD tables in the laboratory with Earth Bonding Points: These are directly connected to PE (I measured). It is my understanding that equipment has to be connected to PE directly and ESD m...
#2: Post edited
by
Elleanor Lopez
·
2024-06-06T12:54:21Z (4 months ago)
- We have ESD tables in the laboratory with Earth Bonding Points: 
- These are directly connected to PE (I measured). It is my understanding that equipment has to be connected to PE directly and ESD mats and bracelets have to be connected to PE through high impedance for both safety and controlled charge dissipation.
- It seems that this invites doing something dangerous like:
- 
- Not saying one should do this, but one could, meaning at some point someone not knowing might. What is the point of providing these Earth Bonding Points on the front panel of the ESD table? What has the need to be grounded directly that does not already have a dedicated equipment grounding wire?
- We have ESD tables in the laboratory with Earth Bonding Points: 
- These are directly connected to PE (I measured). It is my understanding that equipment has to be connected to PE directly and ESD mats and bracelets have to be connected to PE through high impedance for both safety and controlled charge dissipation.
- It seems that this invites doing something dangerous like:
- 
- Not saying one should do this, but one could, meaning at some point someone not knowing might. What is the point of providing these Earth Bonding Points on the front panel of the ESD table? What has the need to be grounded directly that does not already have a dedicated equipment grounding wire?
- EDIT: I measured the band attachment and it is indeed 1MOhm. The confusion came from the fact that I had seen specific Earth Bonding Points that integrated the resistance:
- 
- Therefore, I incorrectly assumed there is no resistance within the armband itself and that the armband is directly grounded. I understand now.
#1: Initial revision
by
Elleanor Lopez
·
2024-06-06T09:53:21Z (4 months ago)
ESD Table Earth Bonding Points - Why?
We have ESD tables in the laboratory with Earth Bonding Points:  These are directly connected to PE (I measured). It is my understanding that equipment has to be connected to PE directly and ESD mats and bracelets have to be connected to PE through high impedance for both safety and controlled charge dissipation. It seems that this invites doing something dangerous like:  Not saying one should do this, but one could, meaning at some point someone not knowing might. What is the point of providing these Earth Bonding Points on the front panel of the ESD table? What has the need to be grounded directly that does not already have a dedicated equipment grounding wire?