resistance/metre

[m1ck_b87]

Afternoon people

How do you work out the resistance/metre on a ring main is it just the same as working out a radial or does the /4 come into it

 

[Octopus]

How about you explain your question and answer a bit more before we dive in??

 

[m1ck_b87]

Well want to be able to compare my r1+r2 results with resistance/metre

 

[telectrix]

do you mean end to end ( r1, r2, rN ) or R1+R2?

 

[ifindoubtdont]

What is the csa of your cable and how long is it end to end. Have a look at OSG p166 Table 9A.

 

[Octopus]

Well want to be able to compare my r1+r2 results with resistance/metre

what

On what type of circuit? What size cable

 

[sappaazz]

add more details so tt we help

 

[ackbarthestar]

Afternoon people

How do you work out the resistance/metre on a ring main is it just the same as working out a radial or does the /4 come into it

Well, consider what you are measuring. Two legs of a radial circuit where the legs are in parallel.

So what value would you expect to see at the physical mid point of the ring (the furthest physical point from the origin) ?