10 mm R1+R2

[rob1967]

Hi good people i have just installed a shower 10.2kw cable is 10 mm with a 4mm cpc withe a 50 A pullcord switch when carring out my r1+r2 the reading obtained is 0.02 is this correct ?

are you testing at the Board, is there any bonding in the shower room? parallel paths perhaps ?

 

[AA410]

Just the cable on its owen as i said i tried it on the cooker cable and got the same reading my test meter is a megger 320 as any one else got one of these

 

[old dog]

Cable
1m
5m
10m
15m
20m
25m
30m
35m
40m
45m
50m
1.0/ 1.0
0.036
0.18 Ω
0.36 Ω
0.54 Ω
0.72 Ω
0.9 Ω
1.09 Ω
1.27 Ω
1.63 Ω




2.5/ 1.5
0.02 Ω
0.10 Ω
0.20 Ω
0.30 Ω
0.39 Ω
0.49 Ω
0.59 Ω
0.68 Ω
0.78 Ω
0.88 Ω
0.98 Ω
4.0/ 1.5
0.017
0.08 Ω
0.17 Ω
0.25 Ω
0.33 Ω
0.42 Ω
0.50 Ω
0.58 Ω
0.67 Ω
0.75 Ω
0.84 Ω
6.0/ 2.5
0.01 Ω
0.05 Ω
0.1 Ω
0.15 Ω
0.21 Ω
0.26 Ω
0.31 Ω
0.37 Ω
0.42 Ω
0.47 Ω
0.52 Ω
10/ 4.0
0.006
0.03 Ω
0.06 Ω
0.09 Ω
0.13 Ω
0.16 Ω
0.19 Ω
0.22 Ω
0.26 Ω
0.29 Ω
0.32 Ω

 

[AA410]

That looks right it must be that the cable is on the large size and a small run dose that make sence.