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# Calculation of Touch Voltage and Ground Current

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## 3-phase systems and 1-phase

Calculation of touch voltage and ground current can be performed on single phase or three-phase systems.

According to the inputs for three-phase system: Line-to-Neutral Volts (Vn), Line 1 Calculated Load (A1), Line 2 Calculated Load (A2), Line 3 Calculated Load (A3), Service Neutral Impedance Z1, and Ground Resistance (3-point method) R, spreadsheet will calculate the following parameters:

1. Resistance of Each Phase
2. Resistance of neutral/Ground
4. Touch Voltage for Metal part to Earth
5. Body Resistance and Body Current

For single-phase systems input parameters are: Circuit voltage and ampere, load, ground, electrode and body resistance.

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1. Enkali jafet Nyanyukweni
Sep 07, 2019

I am struggling to calculate volt drop on three phase , touch volt I need a help

2. Gafar jimoh tosin
Aug 31, 2019

The touch calculation is very useful, thanks.

3. Gafar jimoh tosin
Aug 31, 2019

The touch calculation is very useful, thanks

4. Vilas Pathak
Aug 31, 2019

Aug 31, 2019

Thanks for enrolling me . It is really useful website

6. Carlos
Nov 25, 2018

I’m a Relay Technician and I’m fascinated by all this kind of technical information. Thank you very much!!

7. David Bridglal
Jul 18, 2018

Put in Constant Voltage Transformers.

8. Khaled Ellithy
Jan 25, 2018

Excellent

9. Er DEBASISH PATTANAIK
Dec 26, 2014

Dear Friends,
Recently we have installed a 500kwp solar power plant in our state .It is a on grid system,about 25 nos of solar inverters have been installed in a area of around 1.5 km radius in different building.Here we found that the 20 kwp inverters at last building is developing over and under voltage and going failure.So pls anybody suggest what could be the reason for this and available solution.Thanks

• Harnam Trehin
Jun 09, 2015

Please send me your single line and distances of each inverter from each other and from the load centre. Also please tell me what is the switching frequency of your IGBTs. Log onto our website we can help you if you still have the problem with the last inverter.

Thanks,

10. saeid
Feb 22, 2014

in the name of god

tnx a lot