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Brian99, where abouts in the wiring regs does it say you cannot bond external on a PME system?
 
@ Simonjohns, no, the gas pipe has to be bonded within 600mm of the meter to the point of entry into the building. So if possible it can be bonded in the meter box or on any exposed pipework within 600mm of the meter or at the nearest point where it has entered the property within 600mm of the meter box.
 
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It doesn't :bucktooth:

ive never heard of this and i dont see the issue anyway, is he getting mixed up with were the boding is as opposed to where the pipe runs?
if you read his post he has kindly agreed to discuss this with us without fear of prosecution
 
Must be a huge bungalow to require a 37kw boiler.

and an incredible amount of bonding required

there is no way that a bungalow unless greater than 8 bedrooms (even then?) would require 37kw for heating so it must be for hot water, begs the question why not fit unveneted?
 
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I am looking at the gas supply, a huge run of 22mm to feed a gas thirsty 37kw boiler. Never stood a chance, I have seen 30KW boilers drop 3mb working pressure with 6m of 28mm in a 20m run.
Problem is this is a huge problem in our trade but many engineers dont have a clue how to check working pressures and gas rates etc, and many more cannot be bothered.
I have done a lot of inspecting and auditing in my time and half the boilers out there have more than 1mb drop in working pressure.
 
i have spoke to people who think there should be a 1mb drop, not that it is the max permissable!!!!!!!!

to be fair, in many cases you get away with it, if working pressure 23mb at meter and burner pressure needs to be 18mb you can get away with 5mb drop

i know the incoming could drop and it shouldnt be allowed but tis one of the reasons many ignore it
 
how many inspectors check your pressure drop across a system and on how many installations? you said people wont get away with it, but they do
 
What I meant was fitters dont get away with it on any contracts I am on, we have every job inspected by our own company and then by the initial company themselves.
But the difference is our work is surveyed properly in the first place, if you know what problems wil arise then you can rectify before it does, hence 28mm pipe on most of our jobs.
Its that initial survey that counts a lot I reckon, if you have the parts there and the knowledge that your work is gonna be checked twice, then believe me you do a good job and make sure its to ALL reg's.
I used to subby to a company doing all there surveys and inspections, I saw at least a dozen teams sacked in 12 months, I would put down x amount of 28mm gas due to boiler, pipe run and other appliances. Only to find that on the inspection after the work had been completed there was a 3mb drop on working pressure and no 28mm fitted, it had all been scrapped. Fitters reckoned it didnt need it when I asked so they were made to go back buy the 28mm themselves, fit it in there own time and when it was done, sack them. Poor workmanship is only going to lead to loosing contracts.
 
You wont get away with it at any of my local councils nor on Warmfront scheme, if its got more than 1mb drop then you upgrade the gas.

If you had seen the warmfront install at my mothers house then more than a 1mb drop would be the least of my concerns. The fact i had to repipe 75% of the heating system, the condense, blow off, re make 50% of the rad tails with enough ptfe, alter flue gradient......... infact it would be easier to list the things that was done correctly..... cant think of any thing! 🙁 LOL
 
What I meant was fitters dont get away with it on any contracts I am on, we have every job inspected by our own company and then by the initial company themselves.
But the difference is our work is surveyed properly in the first place, if you know what problems wil arise then you can rectify before it does, hence 28mm pipe on most of our jobs.
Its that initial survey that counts a lot I reckon, if you have the parts there and the knowledge that your work is gonna be checked twice, then believe me you do a good job and make sure its to ALL reg's.
I used to subby to a company doing all there surveys and inspections, I saw at least a dozen teams sacked in 12 months, I would put down x amount of 28mm gas due to boiler, pipe run and other appliances. Only to find that on the inspection after the work had been completed there was a 3mb drop on working pressure and no 28mm fitted, it had all been scrapped. Fitters reckoned it didnt need it when I asked so they were made to go back buy the 28mm themselves, fit it in there own time and when it was done, sack them. Poor workmanship is only going to lead to loosing contracts.

done much installing yourself? your talking about sacking decent men here, who ve went back to put things right and then you sacked them? you could end up with a sore face treating men like that. you would if you tried that up here anyway.
Any idea how much the fitters are getting per system ?
just had an agency send me the prices they re offering for contract work with a national utility co. (not BG)
additional pipe - £7/3m copper LOL , thats alright if you ve got miles of straight runs , but when your working in occupied houses, moving furniture,lifting carpets, floorboards, checking joists, forming crossovers cutting in tees, tieing in existing branches, you can see where i m going here, £7 a length is taking the hit or a miss
pay fitters decent money, instead of peanuts, and the quality of the work will rise.

there s 4 man squads doing full systems in a day up here,up to 10 rads all copper, 15mm to rads, combi, gas upgrade. 2 fitters , a joiner , and a labourer . they re getting £450 a system , £150 ea fitter, £100 joiner and £50 labourer . sounds allright but its head down , backside up from 7.30 in morn till 7,8 or 9 at night, with up to an hour and half travelling each way. fitters are knocking their pans in for a £10 an hour , can see whythe gas upgrade gets swerved and the buckshee copper yadded 🙂 , the squads don t get the scrap cylinders , fat cats even want that now.
 
It would appear you are suggesting I shouldn't have had a 37kW boiler fitted? The gas pressure problem was always a possibility and now its here a solution is sought. I am not Gas Safe Registered and do not intend to touch or alter any gas connections and will employ a gas safe registered person to do this (preferably the plumber who installed the boiler). However, I would like to explore the options with open minded experts before committing to one solution or another and discuss the relative technical constraints. I thought that was the purpose of forums such as this?

By the way, how many copper pipes have you left exposed outside that are connected to internal house bonding on a PME service? I don't want you to worry about it and I'm quite happy to share my concerns without fear of prosecution.

Couldn't agree with you more Brian99, this is a forum and raising questions are what they are all about (to me atleast.) Sadly there are alot of sad insecure people on this forum who wish to instantly jump down your throat.
However I would be concerned by who installed your boiler, If upsizing to a 37kw boiler. As a GSR installer the first thought you would have is pipe sizing! Although PE pipe-work is possible, would it not be easier/quicker to re-route internally and up-size. Any good GSR fitter/installer could do some calcs based on distance, fittings and output. Factory sheathed copper pipe is permitted buried in soil as is steel pipe, PE pipe and trac pipe providing they are buried atleast 375mm deep. Whatever happens there will be disruption.
Good Luck.
 

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