# How do you calculate R1 R2?

## How do you calculate R1 R2?

To calculate a ring circuit R1+R2 value we need to measure the r1 and r2 end to end values of the ring final circuit. r1 = Ring Circuit, Line Conductor. r2 = Ring Circuit, Circuit Protective Conductor. This R1+R2 calculator can calculate the R1+R2 value from the known measured Zs and Ze values.

How do you calculate ZS using R1 R2?

To measure Zs do just that go to the highest point of R1+R2 on that circuit and carry out a live test. Record your result. 2. Calculate Zs by Zs=Ze+(R1+R2).

What is the R1 R2 of an installation?

For each outlet on a circuit, the resistance of both the live and earth conductors together (R1+R2) is measured back to the source. It also sometimes identifies socket outlets where a high resistance has built up in the socket itself, for example where a bad connection has blackened or damaged a terminal.

### Is it OK to calculate R1 R2?

R1+r2 readings are as susceptible to parallel paths as ZS readings but not susceptible to load type etc so it will give you an accurate as possible impression of the installation in a dead state.

Can ZS be lower than R1 R2?

Zs=Ze+(R1+R2) well not in this case. Just not come across such a difference before that Zs has been so much lower than Ze+(R1+R2)….See Also:

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What does R1 R2 prove?

The R1+R2 test proves that the phase and earth connections in the circuit are sound. Its merits lie in it being a very low current dc test. If the connections are suspect and there is (for example) a layer of oxide formed over the terminations, it will give you a true high resistance.

## Should R1 R2 be lower than R1?

R1+R2 must not be higher than R1(ring circuit)on a PIR report…

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