T
TPES
Sorry all, This is going to be a long one...
Maximum Demand... what’s my problem, im struggling to work this out, its taking me ages to figure this out and when i end up with a figure it looks ridiculously low.. Could someone give an example of how they have worked there maximum demand out?
R1+R2... Downstairs Lighting Circuit. I took readings at different pendants on the circuit, in the lounge there’s 2 points on the same switch.. one either end of the room, only couple of meters apart. One of the pendants read 0.47 and the other couple of meters away read 1.50 ?? is this normal?
I had a similar thing on upstairs lights 2 rooms backing onto each other, one reading 0.52 and other reading 2.08 have i got a fault somewhere or are these results acceptable ?
Also to get my Zs on every circuit im adding the highest r1+r2 and Ze together then putting result in Zs box, This is how many sparks i know have said its done, but a couple i know actually take Zs reading.. does it matter which method is done ?
Shower circuit.. IR test, Do you leave the isolator off as not to damage the neon in the pull cord, Or leave the pull cord on and IR test right up to the shower but NOT across L-N ?
Also on the shower when testing RCD trip times where are you sending the fault current from? take the lid off the shower or from the pull cord?
Ring Final Circuit... the ring is wired in VERY old stranded black red in pvc, looks slightly bigger than 2.5mm, then a separate single non-insulated earth running along side it to every point. My end to end resistance readings are r1=0.15, rn=0.15 then r2=0.07 ??, Why am i getting such a low r2 reading I wouldn’t say the earth is larger than live conductors. if not smaller then it would be the same size.
......The highest R1+R2 readings off the ring is 0.24, is this acceptable, seem ok?
IR tests on the ring i am getting L-N >1000, N-PE >1000, But L-PE 301, I know this is within the limits but why do you think it could be so low?
There is a twin socket radial straight from CU to behind the oven and gas hob, both these are just plugged on on plug tops.. Would you label this on the board and circuit name on a test cert as COOKER? Im guessing you would.. prob a daft Q
If there a 2 radials in 1 MCB how are you recording this on a test cert? One underneath the other on the cert given both the same numbers for its position.
Maximum Demand... what’s my problem, im struggling to work this out, its taking me ages to figure this out and when i end up with a figure it looks ridiculously low.. Could someone give an example of how they have worked there maximum demand out?
R1+R2... Downstairs Lighting Circuit. I took readings at different pendants on the circuit, in the lounge there’s 2 points on the same switch.. one either end of the room, only couple of meters apart. One of the pendants read 0.47 and the other couple of meters away read 1.50 ?? is this normal?
I had a similar thing on upstairs lights 2 rooms backing onto each other, one reading 0.52 and other reading 2.08 have i got a fault somewhere or are these results acceptable ?
Also to get my Zs on every circuit im adding the highest r1+r2 and Ze together then putting result in Zs box, This is how many sparks i know have said its done, but a couple i know actually take Zs reading.. does it matter which method is done ?
Shower circuit.. IR test, Do you leave the isolator off as not to damage the neon in the pull cord, Or leave the pull cord on and IR test right up to the shower but NOT across L-N ?
Also on the shower when testing RCD trip times where are you sending the fault current from? take the lid off the shower or from the pull cord?
Ring Final Circuit... the ring is wired in VERY old stranded black red in pvc, looks slightly bigger than 2.5mm, then a separate single non-insulated earth running along side it to every point. My end to end resistance readings are r1=0.15, rn=0.15 then r2=0.07 ??, Why am i getting such a low r2 reading I wouldn’t say the earth is larger than live conductors. if not smaller then it would be the same size.
......The highest R1+R2 readings off the ring is 0.24, is this acceptable, seem ok?
IR tests on the ring i am getting L-N >1000, N-PE >1000, But L-PE 301, I know this is within the limits but why do you think it could be so low?
There is a twin socket radial straight from CU to behind the oven and gas hob, both these are just plugged on on plug tops.. Would you label this on the board and circuit name on a test cert as COOKER? Im guessing you would.. prob a daft Q
If there a 2 radials in 1 MCB how are you recording this on a test cert? One underneath the other on the cert given both the same numbers for its position.
