Load Readings

[mikilianis]

Hi I wonder if I am posting in the correct forum ,if by chance I am not then would some- one please be kind and direct me to the correct forum my query being as follows
I have 3 clip on current meters ( tong testers ) and when a load is measured I get different readings now all is very well if one just wants to check if a circuit is drawing a load , but when one has to explain the reason for the different readings ,
Meter A is a analogue meter
Meter B is a digital “ R.M.S. “ meter
Meter C is a digital meter
On an inductive load the readings are
A = 43 amps B = 42 amps C = 45 amps
On an resistive load the readings are
A = 95 amps B = 87.5 amps C = 103 amps
What could the reason be for the different readings.
Thanks Mike.

[murdock]

if you swop b and c does the 103 amps more to b?

[AndyD]

Are all the clamps 'hall effect'? Are any of the clamps of the flexible type? It would be helpful if you could give make and model numbers of all the equipment you're using.