Ground grid testing
Ground grid testing
(OP)
I helped performed testing on a small rectangular sub where the diagonal grid length was measured at 17 metres. The current probe was installed at 9x the diagonal dimension from one of the grid electrodes.
Voltage measurements were done at .05, .1, .2, .3, .4, .44, .48, .52, .56, .58, .60, .62, .64, .68, .70, .74, .80 & .90 of the current probe distance from the reference ground electrode. A second set of voltage measurements were performed at 105 degree compass direction from the first.
I was surprised that the current probe was not relocated to the direction where the second voltage measurements were made.
Is this the normal field practice to leave the current at 1 location ?2
Voltage measurements were done at .05, .1, .2, .3, .4, .44, .48, .52, .56, .58, .60, .62, .64, .68, .70, .74, .80 & .90 of the current probe distance from the reference ground electrode. A second set of voltage measurements were performed at 105 degree compass direction from the first.
I was surprised that the current probe was not relocated to the direction where the second voltage measurements were made.
Is this the normal field practice to leave the current at 1 location ?2






RE: Ground grid testing
RE: Ground grid testing
RE: Ground grid testing
Is it customary to only perform the one set of test or should more than one corner ground electrode be tested ?