What the??

[Deleted member 9648]

Had to connect a Bristan shower on friday...in the electrical section of the manual it stated-

"On installation of the appliance the impedance of the neutral and earth back to the supply source is to be less than 1 ohm. This is in line with general installation requirements of UK networks and will generally present no problem within the UK network."

Are they havin' a laff or have I missed a new test we should be carrying out?

 

[keniff]

That would be r2+rn? So should be the same as r1+r2 but strange to have that in the manual!!

 

[topquark]

Had to connect a Bristan shower on friday...in the electrical section of the manual it stated-

"On installation of the appliance the impedance of the neutral and earth back to the supply source is to be less than 1 ohm. This is in line with general installation requirements of UK networks and will generally present no problem within the UK network."

Are they havin' a laff or have I missed a new test we should be carrying out?

Think it's the former. Somewhat arbitrary choice of values as well.

 

[GLENNSPARK]

I wonder if they mean neutral-earth.....a PEN conductor as for TN-C systems..which i think can be found in europe......odd though that innit?..lol..

 

[Rockingit]

I think what they actually mean is r1rn and r1r2 values, just badly worded. And yes '1 ohm' is therefore a pretty arbitrary value, especially given the size of cable and cpd involved!

 

[Octopus]

I trust you installed it to the manufacturers instructions!!!!!!!!!!!!!!!

lol

 

[johnboy6083]

I wonder if they mean neutral-earth.....a PEN conductor as for TN-C systems..which i think can be found in europe......odd though that innit?..lol..

I was on 2391-2 recently, and 2 of the blokes on the course work in the same factory. They have PEN conductors to every DB. they said that when you remove an earth, it arcs! apparently its the german way!

 

[Big n Daft]

Steady on chaps................We have a big problem here, one of our brethren has read the instructions. I can only hope this incident was a last resort.

 

[Deleted member 9648]

Steady on chaps................We have a big problem here, one of our brethren has read the instructions. I can only hope this incident was a last resort.

I always aim to read the instructions before binning them.....but after installing when it's too late anyway:waving: