UK Does this henley block on the incoming tails of TT have a fuse in?

[mickhelectrica]

 

[westward10]

The left one, yes.

 

[littlespark]

Well that’s not confusing in any way…. Brown used for line and neutral and then disappears behind the board.

Just asking for a polarity mix up.

 

[westward10]

They are tagged at the meter and is all sealed.

 

[Dave OCD]

Well that’s not confusing in any way…. Brown used for line and neutral and then disappears behind the board.

Just asking for a polarity mix up.

Those browns are an old outer sheath colour,more a dark maroon really. the basic insulation will be red and black inside.

 

[mickhelectrica]

The left one, yes.

Thats what I thought. Likely to be a 60A dont you think. This in a town with a population of around 4000. I thought the DNO would have provided a PME supply but as far as I can see it is a TT. Measured the disconected main earth to electrode at 0.44 megohms. Seems to good to be a TT.

 

[westward10]

0.44 meg ohm 'seems good' ?

 

[nicebutdim]

0.44 meg ohm 'seems good' ?

Seems to be connected to services?

 

[brianmoooore]

Seems to be connected to services?

Plastic ones?

 

[nicebutdim]

Plastic ones?

Been missing a lot of detail lately - in this instance six zeros.

 

[mickhelectrica]

0.44 meg ohm 'seems good' ?

is for a TT...

 

[westward10]

0.44 Meg ohm is 440000 ohms.

 

[DPG]

I think there is some confusion over units here!

 

[mickhelectrica]

0.44 Meg ohm is 440000 ohms.

You are of course correct. I Think i'm confusing myself. I cannot see any bonding conductors in the CU, yet when I get my wander lead out and test from the only earth conductor in there to the stopcock pipework and gas meter I get 0.00 Ω on each despite not being able to see any bonding conductors or earth clamps anywhere. Also when testing the ZE I was looking at my Megger testing a disconected main earth cable to earth electrode and got a reading of 0.44mΩ. I had in my head Ohms. This is of course megaohms... I haven't seen a TT system for a few years and I think I need to read up a bit. Thanks for your help..

 

[westward10]

You got a Ze of 0.44 meg ohm surely your tester does not give meg ohms on an earth fault loop test.

 

[Avo Mk8]

got a reading of 0.44mΩ. I had in my head Ohms. This is of course megaohms.

Sorry to be pedantic but thats 0.44 million ohms!

 

[DPG]

Sorry to be pedantic but thats 0.44 million ohms!

Million? milli?

 

[littlespark]

Small m milli….
Big M mega…

 

[Avo Mk8]

Million? milli?

Doh! I put milli didn't notice the iPad decided otherwise!

 

[brianmoooore]

. I cannot see any bonding conductors in the CU, yet when I get my wander lead out and test from the only earth conductor in there to the stopcock pipework and gas meter I get 0.00 Ω on each despite not being able to see any bonding conductors or earth clamps anywhere.

This will be via the cpcs of cables to the boiler, immersion heater, etc.