Zs test with isolator

[Traineenoob]

I hope your not using the steel braid as your CPC intp the equipment??

Nope im not using the steel as a CPC...

 

[Traineenoob]

Tbh there is no harm in calculating the Zs. When testing a circuit that is rcd protected and has sensitive equiment attached. Testing on low current no trip will give you a false reading.

You guys love to put everyone down.. Must make you feel good?

And i have not done a 17 day/5 week course at a training centre....

I done my 2330 level3

Thanks

 

[telectrix]

I don't think the last few comments were aimed at you personally.

 

[MDJ]

Tbh there is no harm in calculating the Zs. When testing a circuit that is rcd protected and has sensitive equiment attached. Testing on low current no trip will give you a false reading.

You guys love to put everyone down.. Must make you feel good?

And i have not done a 17 day/5 week course at a training centre....

I done my 2330 level3

Thanks

As Tel Mentioned you were not the Target

 

[Traineenoob]

Sorry to jump the gun!

But in all honesty there is no problem with calculating the Zs. :xmas:

 

[MDJ]

Sorry to jump the gun!

But in all honesty there is no problem with calculating the Zs. :xmas:

Well we would disagree, okay it is allowed but to actually verify the reading you need to test it.

 

[kingeri]

When did the equation first appear in the regs, was it in the 15th?

 

[Silly Sausage]

Why wouldn't you take a Zs reading?!
It's easy and shows the 'Live' in-service state of the circuit

 

[MDJ]

It is these modern college lecturers who have brain washed the trainees today to calculate. Ridiculous, one of the easiest tests carried out and they are promoting calculation haha.

 

[Silly Sausage]

Is it something to do with this Live testing counts as Live working bullshyte?!?!
Who are these people?

 

[Traineenoob]

Yes i agree its a very easy test.. But when testing at low current with a megger 1720 its not very accurate.

 

[bigspark17]

If you state "tested to isolator" on the cert i dont see a problem with it.. Aslong as person ordering the work is aware. You would insulation resistance test to the isolator also! This said i would also Zs at futhest point in circuit!

 

[Engineer54]

The isolator would in the majority of cases, be the furthest point on the ''Fixed'' installation. You wouldn't normally test IR or Zs past that point.

 

[mechelec]

Is it something to do with this Live testing counts as Live working bullshyte?!?!
Who are these people?

it it does make sense for them to teach how to calculate Zs as like already stated it is classed as live working. Elf and safety gone mad again ? Well probably not when you think some of the trainees have very little electrical knowledge and even less practical experience. Some Should not be let loose with anything more than a 9V battery.

 

[skydog23]

Well tbh Ive been wiring a few Mitsubishi Ecodan Air Source Heat Pumps and always take my Zs reading at the rotary isolator. The cost of the ecodan unit is £4500 and dont really want to damage the unit! Testing Zs at low current also.

Why on earth would it or can damage your unit ?
Your not getting confused with testing Zs and mistaking it with 500vdc IR are you ?
Not trying to be condersending buddy but Zs at the extremely is not connected to your unit.