Expected circuit length (R1+R2)

[Zdb]

Came across this table from on old thread: Is there a table of expected R1+R2 results in BS7671? - https://www.electriciansforums.net/threads/is-there-a-table-of-expected-r1-r2-results-in-bs7671.103412/



I'm just wondering if anyone has the original or a more detailed version that they wouldn't mind sharing?

TIA

 

[Midwest]

Doesn’t the OSG have some tables?

I had an NIC initial testing course book, with tables for R1+R2, including ones for RFC’s.

 

[telectrix]

i have a pdf with that and other useful info. pm me your email and i'll send you it.

 

[DT1991]

i have a pdf with that and other useful info. pm me your email and i'll send you it.

I've just sent you a PM also if you could be so kind thanks

 

[telectrix]

email sent.

 

[Deleted account]

Doesn’t the OSG have some tables?

I had an NIC initial testing course book, with tables for R1+R2, including ones for RFC’s.

I think of the top of my head it’s table I1.

 

[Deleted account]

Yes it’s I1,
but it only gives miliohms per meter for line conductors of various sizes.

You can work out the total for whatever length from that.

 

[Deleted account]

Table I1 from OSG yellow one, but values don’t change from this to the blue one.

 

[Zdb]

Thanks, Tel for the seful info.

I have attached a clearer image of the tables below for anyone else who might find it useful.