Old chestnut

[grumpyjohn01]

Out of interest John, what figure would you accept for a TT system?

Please don’t say ≤200Ω, I’ve not taken my medication yet.

Well we know what the regs say....the other day I had 193ohm on a TT (3/8 rod) not happy....swapped out for 2 x 5/8 joined, got to 27ohm....much happier!!

 

[grumpyjohn01]

Actually you may well find that the .4 reading you took could well be 0.05 or more resistance lost in the test kit or resistance of the leads , or even the cabling, bet if the test was carried out across the main fuse it would be way lower , please do do that, it was a comment !!

I assume you mean don't....! wouldnt dream of ever cutting seals, its very very naughty despite my DNO training and MOCOPA qually.....

 

[telectrix]

what seals?

 

[Knobhead]

Out of interest John, what figure would you accept for a TT system?

Please don’t say ≤200Ω, I’ve not taken my medication yet.

Well we know what the regs say....the other day I had 193ohm on a TT (3/8 rod) not happy....swapped out for 2 x 5/8 joined, got to 27ohm....much happier!!

27Ω is not as good as 0.4Ω is it?

I really don’t know why you suggested making it TT.

 

[grumpyjohn01]

27Ω is not as good as 0.4Ω is it?

I really don’t know why you suggested making it TT.

As previous comment, I didnt want to do that,just thought some out there might think it the 'right' thing to do....

 

[grumpyjohn01]

How does one type the Omega symbol?

 

[telectrix]

go to "type mathematical symbols online". then select a symbol. copy and paste.

 

[telectrix]

like this. ΩΩΩ

and ∛

 

[7029 dave]

ΩΩΩΩΩ Good init.

 

[nickblake]

ΩΩΩΩΩ Good init.

ΩΩΩΩΩan we get it the other way up we can make it look like a zip then

 

[Guest77]

As previous comment, I didnt want to do that,just thought some out there might think it the 'right' thing to do....

Half the Electrical Trainee brigade on the site I suspect.

 

[telectrix]

Half the Electrical Trainee brigade on the site I suspect.

them that know what TT is.

 

[dingledong]

I know what tt is it's a motorbike race on the isle of man

 

[telectrix]

but do you know what tht TT stands for? no googling!

 

[Knobhead]

go to "type mathematical symbols online". then select a symbol. copy and paste.

I used that and made up a crib sheet in word. Saves going on line for symbols when you need them.