Eicr ring main readings

[cliffed]

Would you guys be happy with these readings on ring main,Rcbo c type 30ma/32 amp.
r1 1.87...rn 1.91 cpc 3.20....R1 +R2.1.26.
zs 1.46 ohms.

 

[telectrix]

some long ring you have there.
[automerge]1573984432[/automerge]
r!+r2 = 5.07 ohms. this equates to approx. 250m, or there's something wrong.

 

[cliffed]

Yea,would it comply,Max allowed 0.68 ohms,but......

 

[sinewove]

some long ring you have there.

Sounds like roughly 270m of cable there thought max was about 100m of 2.5mm.S

 

[Ian1981]

As long as there is no volt drop concerns for the circuit and the rcbo when tested gives adequate earth fault protection, then it is what it is.

 

[Andy78]

Is it actually that long ? Those would be the highest readings I've ever seen for such a circuit.

 

[Ian1981]

Works out at 258 meters from the R1+R2 result assuming 2.5mm T&E

 

[Baddegg]

What size cable is it?....and why a “c” type?....I have no answer to your question but am genuinely interested ?

 

[cliffed]

2.5 mm lsoh t&e,measurement correct,it’s along one,also did short circuit measurement,according to my cals it does not comply.

 

[cliffed]

Is it actually that long ? Those would be the highest readings I've ever seen for such a circuit.

scary ain’t it.