Can Metrel EasiTest carry out Earth Rod resistance test on TT System?

[TonyJohnson]

Hi,

I have a truck container cafe with a floating generator for power.
I am fitting an earth spike to the generator and also an earth spike to the steel container. I then need to measure the TT system i have created but i only have a Metrel easitest.. Will the tester do the job and if so how do i carry out the test..

Cheers
Tj

 

[telectrix]

ask the forum sponsor, test-meter.

 

[davesparks]

Why on earth are you setting this up as a TT system?
Normal practice is to use TNS for generators

 

[TonyJohnson]

There

Why on earth are you setting this up as a TT system?
Normal practice is to use TNS for generators

There is only one source of supply, from this floating earth generator. My idea is to make the earth potential belt and braces by adding earth spikes... Can you explain what you mean by creating a TNS please.

 

[TonyJohnson]

ask the forum sponsor, test-meter.

Cheers Buddy, spoke to metrel, the tester i have doesnt do this test as its too old. but thanks for pointing out the obvious..

 

[jamie-spark]

Hi,

I have a truck container cafe with a floating generator for power.
I am fitting an earth spike to the generator and also an earth spike to the steel container. I then need to measure the TT system i have created but i only have a Metrel easitest.. Will the tester do the job and if so how do i carry out the test..

Cheers
Tj

Even if you did this ,you would not have created a TT system. To create a TT system the earth electrode at the generator end would need to be connected to one of the winding ends to be referenced. What you are describing , would still be a form of electrical separation but with 2 x pointless earth electrodes in the ground.

 

[davesparks]

There


There is only one source of supply, from this floating earth generator. My idea is to make the earth potential belt and braces by adding earth spikes... Can you explain what you mean by creating a TNS please.

So you are planning on connecting a floating generators chassis to earth rods? Surely that would increase the chances of serious injury resulting from a second fault?

To have a TT or TNS system you would need the neutral point connected to earth at the generator. To make it TT you would then have no earth conductor from the generator to the load but rely entirely on the return path from one earth rod to the other.
For TNS you connect the neutral point to earth at source and have an earth conductor going to the load.