Main bonding

[Nicktric]

Hi I am doing a CU change and have 10mm gas bond direct to the MET. There is no conductor back to the MET for water but it is bonded in 10mm and there is continuity back to MET. I know this is acceptable if the conductor is not cut but I know it is, should I run a new 10mm conductor from incoming water to MET or just note it in departures?
Thanks

 

[Deleted member 9648]

Assume you are saying that the water is linked from the gas but not continuous?....if so use a crimp lug large enough to take both 10mm cables at the gas, a 25mm lug will do it. Ensure both cables are securely crimped into the same lug,this will meet the requirements.

 

[Nicktric]

Thanks WP.The gas is a a recent install and a single 10mm back to the MET. The water has no bond back to the MET but I can see 10mm at the entrance to the property. When I disconnect the 10mm at the stop tap I get good continuity back to the MET but I can't see where it loops to the gas. There is no supplementary bonding. I am sure it is not continuous as the gas is quite recent. So unfortunately can't join them..? So in that case is it a new run? Also this one will be assessed..
Thanks.

 

[malcolmsanford]

So it must be joined somewhere as you have confirmed continuity of the conductor. Out of interest what was the reading of the conductor?

As it is an assement, personally I would run another bond for the water, on assessments the more you do it "to the book" the better, in real life ...............hmmmmmmmmmmmm not saying

 

[telectrix]

is the water bond connected in the CU?

 

[Nicktric]

No Telectrix it isn't. 0.45ohms Malcolm, thanks and feel as though I should run another to save even having the discussion on the day..!

 

[telectrix]

o.45 ohms is excessive anyway. run new bond.

 

[malcolmsanford]

if it's 0.45 ohms mate it's either running via the next town, the joint is bad, or the old favourite of leaving pipe as 10mm joining to 1mm under floorboards and reappearing back at 10mm.

Run a new.

 

[telectrix]

0.45 equates to around 300yards of 10mm!!!!!

 

[malcolmsanford]

0.45 equates to around 300yards of 10mm!!!!!

smarty pants!!!

 

[IQ Electrical]

0.45 equates to around 300yards of 10mm!!!!!

Yards

 

[malcolmsanford]

Yards

Remember how old he is .....suprised we never got it in cubits or chains.

 

[telectrix]

oops, meaqnt 500 yards. typo'd , sausage fingers. LOL. anywat, no smarter than your next town comment.

 

[malcolmsanford]

oops, meaqnt 500 yards. typo'd , sausage fingers. LOL. anywat, no smarter than your next town comment.

Pure laziness mate, as could not ber bothered to find out the m/ohm value of 10mm lol.

 

[telectrix]

book is in van.
info time: 4 rods = 1 chain (22yds): 10 chains = 1 furlong, 1 acre = 1 furlong x 1 chain. thats 1 horse and 1 man ploughing for a day.