If building is already ongoing a earth mat on a bed of marcanite is the way to go usually gets you between 5 ohm and 30 ohm we do a lot of these as we do the temps on sites for the likes of bam Kier and laings and pme is not permitted earth spike test kit for meggers are worth weight in gold...
It is a real hard one I had the same issue at Lancaster university recently putting a temp supply in I ended up putting a 900x900 earth mat in a metre down on a bed of marconite managed to get reading down to 34 ohm
Spoke to lightning protection lads recently they said any wer north of Preston...
Any one no any other companies for 10kvas MDAs ect I used to use Blakley and swapped to elbjorn witch was awful equipment but blakley is so expensive when they just get bashed around on site
I think the black in the coman is joined to the 2 reds in conecter as it would of been tight getting 3 cables in the comman although you could of put a red each side and linked and he dint have any red cable left
Had my 2017 sprinter stolen the other night in Liverpool withought the key
I managed to find the van with all my tools tester ect missing but all sorts of crow bars and sledge hammers in the back
It was on false plates to 64 plate
No glass had been smashed but front 1/4 window seal had been...
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