D
Deleted member 9648
Carrying out a few minor remedials following an EICR on a small rented cottage this morning. One item was to replace the immersion heater stat for one with a thermal cut out. Switched off DP isolator alongside the tank, check with probes, crack on. Only trouble was the airing cupboard was a bit of a squeeze, and in manoeuvring around to get better access I managed to knock the switch back on with my elbow while having the live conductor in my other hand. Wrist in contact with the copper hot pipe on the top of the tank I got one hell of a poke, didn't half 'effin hurt. Had to have a bit of a sit down and contemplate, was working alone in an empty cottage, could have been the last EICR I ever done.
That's how it happens boys and girls, safe isolation every time with a moments thought for the unexpected before diving in. Lesson learnt....well 'till the next time anyway.
On another note, was a TT system with an Ra of 260 ohms, earth rod was in good condition with a 16.0mm main earth lead properly lugged to the rod.
I didn't code it because....
It complies with Bs 7671, which does not give a max value of Ra, the 200 ohms mentioned is only mentioned as possibly being unstable when nowhere in Bs 7671 does it actually state the Ra must be stable. A max Zs of 1667 ohms is permitted, so in theory an Ra of Ra minus max R1+R2 value would comply with Bs7671.
I did note that an improvement would be beneficial but no code.
I've no intention of debating this as I'm immovable on it and have argued the case before on here.
Just interested in what code, if any, others might apply.
That's how it happens boys and girls, safe isolation every time with a moments thought for the unexpected before diving in. Lesson learnt....well 'till the next time anyway.
On another note, was a TT system with an Ra of 260 ohms, earth rod was in good condition with a 16.0mm main earth lead properly lugged to the rod.
I didn't code it because....
It complies with Bs 7671, which does not give a max value of Ra, the 200 ohms mentioned is only mentioned as possibly being unstable when nowhere in Bs 7671 does it actually state the Ra must be stable. A max Zs of 1667 ohms is permitted, so in theory an Ra of Ra minus max R1+R2 value would comply with Bs7671.
I did note that an improvement would be beneficial but no code.
I've no intention of debating this as I'm immovable on it and have argued the case before on here.
Just interested in what code, if any, others might apply.
was you life flashing before you .
