Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
I need to connect up earth bonding conductors to my incoming gas and
water supplies, and have just checked Whitfield's "Electrician's Guide" to double-check which side of the respective stop cocks to attach the bonding. For an all-copper system like mine, Whitfield shows the water pipe earthed on the *street* side of the stopcock, whereas the gas pipe it is on the *house* side of the stopcock (Fig 5.13). I'm assuming that's correct but can't understand the logic behind it - before I unpack my earth clamps please can someone explain?! Thanks David |
#2
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
In an earlier contribution to this discussion,
Lobster wrote: I need to connect up earth bonding conductors to my incoming gas and water supplies, and have just checked Whitfield's "Electrician's Guide" to double-check which side of the respective stop cocks to attach the bonding. For an all-copper system like mine, Whitfield shows the water pipe earthed on the *street* side of the stopcock, whereas the gas pipe it is on the *house* side of the stopcock (Fig 5.13). I'm assuming that's correct but can't understand the logic behind it - before I unpack my earth clamps please can someone explain?! Thanks David Assuming that the stopcocks and the pipes either side are all made of conducting material, does it really matter? -- Cheers, Roger ______ Email address maintained for newsgroup use only, and not regularly monitored.. Messages sent to it may not be read for several weeks. PLEASE REPLY TO NEWSGROUP! |
#3
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
On Mon, 5 Feb 2007 09:52:34 UTC, Lobster
wrote: I need to connect up earth bonding conductors to my incoming gas and water supplies, and have just checked Whitfield's "Electrician's Guide" to double-check which side of the respective stop cocks to attach the bonding. For an all-copper system like mine, Whitfield shows the water pipe earthed on the *street* side of the stopcock, whereas the gas pipe it is on the *house* side of the stopcock (Fig 5.13). I'm assuming that's correct but can't understand the logic behind it - before I unpack my earth clamps please can someone explain?! The OSG clearly states that "the connection to the gas, water, oil etc. service should be within 600mm of the service meter, or at the point of entry to the building if the service meter is external, and must be on the consumer's side before any branch pipework...". Refers to 547-02-02 in the regs. The regs also say that if there is an insulating section at that point, or a meter, the connection should be made to the consumer's hard metal pipework. So, if there isn't a meter, have it as near to the point of entry as possible, so that will determine which side of the stopcock you choose. Perhaps that's what Whitfield is getting at. (I have the blue versions of OSG and regs). -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by http://www.diybanter.com |
#4
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
In article ,
Lobster wrote: For an all-copper system like mine, Whitfield shows the water pipe earthed on the *street* side of the stopcock, whereas the gas pipe it is on the *house* side of the stopcock (Fig 5.13). I'm assuming that's correct but can't understand the logic behind it - before I unpack my earth clamps please can someone explain?! I must be Irish - to be sure to be sure - but always bond both sides of the stopcock and gas meter/cutoff valve. Clamps ain't expensive. -- *Upon the advice of my attorney, my shirt bears no message at this time Dave Plowman London SW To e-mail, change noise into sound. |
#5
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
"Dave Plowman (News)" wrote in message ... In article , Lobster wrote: For an all-copper system like mine, Whitfield shows the water pipe earthed on the *street* side of the stopcock, whereas the gas pipe it is on the *house* side of the stopcock (Fig 5.13). I'm assuming that's correct but can't understand the logic behind it - before I unpack my earth clamps please can someone explain?! I must be Irish - to be sure to be sure - but always bond both sides of the stopcock and gas meter/cutoff valve. Clamps ain't expensive. -- *Upon the advice of my attorney, my shirt bears no message at this time Dave Plowman London SW To e-mail, change noise into sound. I believe that the gas companies now put electrical insulators in their meters and do not want you to bond at their side of the supply to stop currents in their pipework. Adam |
#6
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
ARWadsworth wrote:
I believe that the gas companies now put electrical insulators in their meters and do not want you to bond at their side of the supply to stop currents in their pipework. Correct, and has been the case for quite some time. Where fitted it's an insulating insert on the input side of the meter (AIUI). -- Andy |
#7
Posted to uk.d-i-y
|
|||
|
|||
Connections for main earth bonding to gas/water?
Assuming that the stopcocks and the pipes either side are all made of conducting material, does it really matter? It does if its Gas, see Andys reply. Dave |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
running main bonding cable along same route as water | UK diy | |||
Cross-bonding/earth bonding gas meter | UK diy | |||
Earth provision after replacing water main with MDPE | UK diy | |||
Earth provision after replacing water main with MDPE | UK diy | |||
Earth Bonding Water Heater | UK diy |