OK, before I start, if you get confused, don't worry, 8 different people from Scottish Power are!
Following our RCD and next doors tripping in sync for no apparent reason I called an electrician to take a look, refer to
//www.diynot.com/forums/viewtopic.php?t=207456 from last Jan for more info!
Electrician came out, no problem, connected a 'megger' passed, tripped at 28mA..... IR test pass etc etc..... turned off main RCD ..... and connected ammeter to main incoming earth... 2A on earth incoming!
Phoned SP, they treated the call as an emergency, within 4 hours which actually turned into 4 weeks due to snow, SP came out today.
Yep, 3A now on incoming Earth, fluctuating and intermitenetly rising to 7A
We feed next doors supply (semi-detached) so they pulled the service fuses in both houses (and broke ours so a nice new one now) and 3A was still present.
Now the tricky bit, our supply is overhead and SP claim there is NO EARTH provided by them and local spikes should be installed, none of the 8 houses in our street have them! after checking 4 random houses, all earths are joined to DNO's neutral at the cutout. Then SP checked earths on two more houses on same phase, 2-5A on all Earths.....
They hit a spike into our grass and ran a lead to our Earth, and the phantom current disappears, they think it is on their neutral
They have left after a full day not having a clue what is going on here after 8 men have been out today. Houses earths are tied to their neutral, schmatics of the setup show no Earth on DNO side, yet there is what they think is an earth cable on the poles
Just thought i'd give everyone a read tonight and let you try and get your head around it!
Following our RCD and next doors tripping in sync for no apparent reason I called an electrician to take a look, refer to
//www.diynot.com/forums/viewtopic.php?t=207456 from last Jan for more info!
Electrician came out, no problem, connected a 'megger' passed, tripped at 28mA..... IR test pass etc etc..... turned off main RCD ..... and connected ammeter to main incoming earth... 2A on earth incoming!
Phoned SP, they treated the call as an emergency, within 4 hours which actually turned into 4 weeks due to snow, SP came out today.
Yep, 3A now on incoming Earth, fluctuating and intermitenetly rising to 7A
We feed next doors supply (semi-detached) so they pulled the service fuses in both houses (and broke ours so a nice new one now) and 3A was still present.
Now the tricky bit, our supply is overhead and SP claim there is NO EARTH provided by them and local spikes should be installed, none of the 8 houses in our street have them! after checking 4 random houses, all earths are joined to DNO's neutral at the cutout. Then SP checked earths on two more houses on same phase, 2-5A on all Earths.....
They hit a spike into our grass and ran a lead to our Earth, and the phantom current disappears, they think it is on their neutral
They have left after a full day not having a clue what is going on here after 8 men have been out today. Houses earths are tied to their neutral, schmatics of the setup show no Earth on DNO side, yet there is what they think is an earth cable on the poles
Just thought i'd give everyone a read tonight and let you try and get your head around it!