Touch Potential

What determines touch potential <50 volts how does one achieve this res, of cable earth core, NER sizing, calc?

Questions by Padlock   answers by Padlock

Showing Answers 1 - 3 of 3 Answers

Lokesh M

  • Jan 3rd, 2013
 

You create a low-impedance path by bonding the metal parts of the electrical system and the grounded (neutral) conductor.
You can achieve a touch potential of < 50v by reducing the resistance between the two casings by bonding, say to 0.1 ohms and the potential difference under fault is reduced to 20-25 volts.
You can remove unsafe voltage on metal parts of the electrical device by opening the circuits OverCurrent Protection Device (OCPD) in less than 1 sec.

  Was this answer useful?  Yes

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.

 

Related Answered Questions

 

Related Open Questions