How does it measure earth leakage by clamping L & N? In my mind the current in both conductors would cancel each other out & give a reading of zero. How does it work please?
@@craigbutler6243 you clamp around the live and neutral and see if there is any imbalance if you only did the earth that could be disappearing down a water pipe etc L and N gives you the true leakage reading if there is any imbalance
@testinstrumentsolutions appreciate your answer & I understand that part, but I just can't get my head around how it gives an earth leakage current by clamping line & N as for a normal current reading we clamp Line, so in my mind if we clamp line & N I'd expect them to cancel one another out for a reading of zero
How does it measure earth leakage by clamping L & N? In my mind the current in both conductors would cancel each other out & give a reading of zero. How does it work please?
@@craigbutler6243 you clamp around the live and neutral and see if there is any imbalance if you only did the earth that could be disappearing down a water pipe etc L and N gives you the true leakage reading if there is any imbalance
@testinstrumentsolutions appreciate your answer & I understand that part, but I just can't get my head around how it gives an earth leakage current by clamping line & N as for a normal current reading we clamp Line, so in my mind if we clamp line & N I'd expect them to cancel one another out for a reading of zero
@ every earth leakage clamp on the market you would
Clamp
Around the L&N
@ if there isn’t any leakage it will read 0 as you say but if there is it will give a mA leakage reading leaking to earth
What I need to measure above 20mA say 30mA?
Increase the range on the tester
@@testinstrumentsolutions Would it then read it as 0.030 amp?
@@fixit8495 yes 👍