IEC 60364 Table 48A

AJJewsbury:

Can you go into more detail on the EEBADS approach?

You're making me feel old now!


EEBADS = Earthed Equipotential Bonding and Automatic Disconnection of Supply - what ADS was referred to in years gone by (but long after the period where regs required some earthing, and perhaps a limit on the resistance between parts within an installation, but without any particular requirement for disconnection). The EEB bit got dropped from the name - possibly due to the fact that bonding doesn't really create a true equipotential zone (at least not where large fault currents are involved - Ohm's Law gets in the way), plus of course we sometimes don't even attempt to create an equipotential zone (outdoors for instance), but still have ADS.


   - Andy.

Thanks :)


And I agree much that same with all your points.

AJJewsbury:

Can you go into more detail on the EEBADS approach?

You're making me feel old now!


EEBADS = Earthed Equipotential Bonding and Automatic Disconnection of Supply - what ADS was referred to in years gone by (but long after the period where regs required some earthing, and perhaps a limit on the resistance between parts within an installation, but without any particular requirement for disconnection). The EEB bit got dropped from the name - possibly due to the fact that bonding doesn't really create a true equipotential zone (at least not where large fault currents are involved - Ohm's Law gets in the way), plus of course we sometimes don't even attempt to create an equipotential zone (outdoors for instance), but still have ADS.


   - Andy.

Thanks :)


And I agree much that same with all your points.