brightspark
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are u looking for stuff to do
https://www.google.co.uk/search?q=e...AAAABAH&biw=1269&bih=607#imgrc=058qAtcTJg4JgM a bit ott
- Thread starter bigegg
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https://www.google.co.uk/search?q=e...AAAABAH&biw=1269&bih=607#imgrc=058qAtcTJg4JgM a bit ottI've actually seen so called electricians pouring water over the rod to get readings down in sandy soil
The good old take a slash on the rod before you test it
There's a device called mat-e that detects and disconnects open PEN, only suitable up to 32 amps though.
Please don’t disconnect your main earth just yet.
There is so much crap spoken about it being ‘illegal to export PME’ spoken by people who don’t really know what they are trying to prevent.
At the moment you have a very good earth connection provided by the DNO somewhere less than 0.35 ohms. There will be multiple earth rods all the way back to the transformer. All the joints will have an earth rod.
If you TT the system you will be reliant on a single earth rod that’s going to have up to 200 ohm resistance. If the bit of wire going to the earth rod gets cut by the lawnmower you’re entirely reliant on the crappy Chinese RCD for fault protection.
The main reason for TTing an outbuilding is if you lost the neutral leg in your supply. This would result in everything rising to 230v (as the neutral and earth is bonded in your cutout). Potentially if you are stood in your wet muddy shed and touch something metallic (and bonded) you’re going to get zapped.
But which electricians TT their outdoor sockets? The risk is exactly the same...
None of this constitutes electrical advice and I appreciate there are times when TT makes sense. You should get proper advice. But if the sparky says ‘TT it’ I’d ask him why, and then ask him if he also TTs his outdoor sockets.
As an aside, there’s nothing to stop you sticking an earth rod in the ground & leaving your PME earth connected if it makes you feel better. Yes you could end up earthing the whole street in some wild fault scenario but the alternative would be no earth at all...
The Artilleryman
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Amendment 1 is out for consultation (until 20th December 2020), thus the regs. Have Not changed Yet!
bigegg
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mtt.tr
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The reason it ends up tt'd more often than not is alot of customers wont suffer the cost of the oversize csa on exported pme earth
Outdoor sockets are a risk assessment exercise unlikely to be an issue.
I have known outdoor light columns in gardens to be fed by a tt supply located somewhere convenient.
brightspark
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there is a lot of humming and haring with various testers on the subject of outbuildings just make it a tt supply and everyones happy its not worth arguing over .asfar as the earhwire getting damaged with a lawnmower wont happen as the cable has to be protected even broken the rcd will pick up on current imbalance and trip if there is a fault. the rcd going faulty is very rare. only ever seen one faulty that wasn't tripping at the correct ma in 50 years. the rest were burning out due to bad workmanship overload or loose wires 
just changed 2 this week burning out
just changed 2 this week burning out
mtt.tr
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there is a lot of humming and haring with various testers on the subject of outbuildings just make it a tt supply and everyones happy its not worth arguing over .asfar as the earhwire getting damaged with a lawnmower wont happen as the cable has to be protected and the rcd going faulty is very rare only ever seen one faulty that wasn't tripping in 50 years the rest were burning out due to bad workmanship overload or loose wires
Had a batch of bad rcbos once other ones where fine.
brightspark
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mk did a recall on some of theres 7 years ago . I relaced the ones I fitted and was paid £70.00 for replacing them
scored goodstyle because both were next to each other in a school .mk rang me up and asked if I was interested in going round jobs refitting faulty ones where other electricians didn't want to do it . I passed on it as was 2 busy but give them my mates number he went and changed about 25 nice easy jobs and good moneyAmendment 1 has been out for a while now, EV charging. Amendement 2 which is due in 2022 is currently out for discussion/feedback, you can stick your 2 penneth worth in if you fancy. The biggest potential change they're trying in amendment 2 will be making AFDDs compulsory.
mtt.tr
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Afdds id put up with, but the price will **** customers off. But i do my best to avoid CU changes as they are normally a can of worms riddled with historic fualts
brightspark
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ive changed loads with faults and borrowed neutrals on on over the years what id do was say to the punter il come and test wiring 1st and if alls ok il fit the board the next day if faults id fix them all 1st then come back and do the board
mtt.tr
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Me to mate, no test no job im not desperate for it
bigegg
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Exactly my mate's (who i'm getting some work experience with) attitude.
EICR.
Fault fix.
CU change last.
Otherwise you change the CU for a quoted price, and end up being blamed for all the faults, and fixing them for nothing.
Yeah I agree, they're trying to do it with SPDs, RCBOs, the type A RCD's for DC using equipment and selectivity trying to bin off the dual RCD split load boards. Thing is all it does is make a board change prohibitively expensive. So a family stick with their old rewireable board due to the cost of replacement/upgrade, when in fact stick them in a split load dual RCD consumer unit with type AC RCDs and granted they're not as well protected as an SPD, AFDD, Type A RCBO loaded consumer unit but they're much better protected than their old board.
The IET need to realise that everybody isn't wodded and can't afford all the latest bells and whistles safety devices they're trying to force onto people in the guise of safety (manufacturer driven). Their drive to make electricity safer and safer is in fact making it less so because people refuse to upgrade so stick with their older consumer units or get DIY dave who doesn't know how to or need to comply with the regs to lash them in a new consumer unit instead of someone who knows what they're doing and will carry out the proper testing.
The Artilleryman
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Thanks for the correction. I'm sure the 2 articles had said amendment 1, but on checking found I was wrong.
The days of a sub £100 CU are fast disappearing and as others have said this will put home owners off getting the CU changed due to the CU being closer to £500 before fitting.
8ob
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