1.2

[m1ck_b87]

When calculating r1+r2 i use resistance/metre values then x lenght divide by 1000. my question is for calculating zs is this equation right. Zs=ze+(r1+r2)x1.2.

 

[m1ck_b87]

Zs = r1+r2 x1.2xlength /1000.

 

[Sintra]

Is this for a ring final or a radial circuit.

 

[telectrix]

R1 and R2. capital letters. note the difference. like comarethemeerkat with comparethemarket. different letters, different meanings. sssimlpes

 

[m1ck_b87]

Radial and sorry r1 r2

 

[Sintra]

Radial and sorry r1 r2

r1 & r2 don't exist on a radial.

 

[telectrix]

only on cross ply.

 

[Jonny66]

Poor guy, I'm now confused...............R1+R2..............ring final you will have end to end continuity readings of r1, r2 and rn whereby (r1+r2)/4=R1+R2

During design stage yes, Zs=Ze+(R1+R2) x Cr x L ...........(Cr = rating factor for operating temperature table 13 OSG)

 

[SirKit Breaker]

(r1+r2)/4=R1+R2 unless there is a spur on the circuit! Sorry to confuse the issue.

 

[m1ck_b87]

Thanks jonny at least someone is here to help.