L
lee1002
I was wondering if anyone can help me out with this conundrum.
I was testing a domestic property and tested a security alarm which was a 6A MCB not supplied by any RCD.
Ze was 0.12 Ohms
R1+R2 was 0.10 Ohms
Now using the calculation I assumed the reading would be no greater than 0.22 Ohms
When carrying out the ZS test I recorded a value of 0.23 Ohms. I thought this was not possible?
I ensured during R1+R2 the leads were nulled and the battery was recently changed.
I was wondering how this could occur?
I was testing a domestic property and tested a security alarm which was a 6A MCB not supplied by any RCD.
Ze was 0.12 Ohms
R1+R2 was 0.10 Ohms
Now using the calculation I assumed the reading would be no greater than 0.22 Ohms
When carrying out the ZS test I recorded a value of 0.23 Ohms. I thought this was not possible?
I ensured during R1+R2 the leads were nulled and the battery was recently changed.
I was wondering how this could occur?