ZS Lighting

[Mark2009]

Hi
Done a zs on lights today got reading 1.28 tried again but the meter kept tripping Kewtect Meter, how can i use maths to get the answer.

Thanks

Mark

 

[Sparky Ninja]

Seriously?

 

[ross0909]

r1+r2 + ze =calculated zs reading of a circuit

 

[nickblake]

Zs=Ze + R1+R2 ,, but whats wrong with a reading of 1.28 if its on a 60898 MCB then the max is 7.66

 

[DurhamSparky]

lalalalalalalalalalalalala!!! 5 week lalalalalalalalalalalalalalalala!!!

 

[Sparky Ninja]

lalalalalalalalalalalalala!!! 5 week lalalalalalalalalalalalalalalala!!!

I hope so...

 

[Amp David]

I'd advise going back to college mate. Unbelievable!!!

 

[ross0909]

ive seen this bloke before ,carries the tester upside down!

 

[nickblake]

lalalalalalalalalalalalala!!! 5 week lalalalalalalalalalalalalalalala!!!

i thought it was 5 a day .. oh thats fruit sorry

 

[SimpleSimon]

Senior member since 2009.

 

[Mark2009]

Hi
First i would like to say that if everyone is so bright why are they on this fourm, i asked a simple question, Kewtect are not the best meters and i know i can bridge the RCD so it wont trip i just wanted the easy option. Kama could hit any of you at any time.

 

[nickblake]

dont think there was any mention of the RCD tripping in your post you said meter , the calculation is standard practice , we will never stop learning , but if you had explained your question a little clearer then the guys could have given you the answer that you required ,and we did

 

[Mark2009]

Read my link

 

[nickblake]

Hi
Done a zs on lights today got reading 1.28 tried again but the meter kept tripping Kewtect Meter, how can i use maths to get the answer.

Thanks

Mark

If you had worded it : when i carry out a Zs test on a lighting circuit , the RCD keeps tripping how can i calculate the Zs

im not having a go mate but

 

[SimpleSimon]

Mark I apologise for my comment. I'm in a bad mood through a bad afternoon and took it out on you. I'm sorry mate, I don't know you nor your compentency so I don't feel I had a right also I've been there before and not too long ago asking questions like that. No hard feelings.

 

[Sparky Ninja]

Hi
First i would like to say that if everyone is so bright why are they on this fourm,

Well that's obvious. I'm here to share my excellence with the rest of you and to give you all half a chance.

i asked a simple question,

Too simple. It was the equivalent of a cruise liner captain asking which side was starboard to a passengers Chihuahua, something you should really already know.

If you are going to equip yourself with an installation tester, you need to learn how to use it. How can you correctly complete any installation or periodic report with knowing how to obtain Zs values.

Kewtect are not the best meters and i know i can bridge the RCD so it wont trip i just wanted the easy option. Kama could hit any of you at any time.

Well I disagree with you there as well also..





.. sigh

 

[Des 56]

Hi
Done a zs on lights today got reading 1.28 tried again but the meter kept tripping Kewtect Meter, how can i use maths to get the answer.

Thanks

Mark

Cant see why you want to retake the Zs
You have a reading of 1.28 Use that reading for your Zs unless you suspect the meter is dodgy (you wont then have to use maths for the answer )


Does your particular meter normally have the facility for non trip and the non trip is not functioning ?

 

[malcolmsanford]

AS your circuit is also RCD protected then the ZS will be 1667 which makes the 1.28 you have no longer relevant.

 

[simpson93]

just wondering no expert myself but isnt <ZS=ZE+(R1+R2)> better to find the zs in the first place as if your useing a loop impedance tester will be less then <ZS=ZE+(R1+R2)> due to parallel paths?

 

[SirKit Breaker]

Come on boys and girls, the bloke asked a question, either answer it or ignore it, this forum is too good and professional for crap like this. The big shed forum is the place for moronic comments and replies.

Cheers...........Howard

 

[simpson93]

Hi
Done a zs on lights today got reading 1.28 tried again but the meter kept tripping Kewtect Meter, how can i use maths to get the answer.

Thanks

Mark

if ur gunna try and use math to figure it out ur gunna be there a long time get ZE from the board and add your R1+R2 from your previous tests.

 

[sams]

Come on boys and girls, the bloke asked a question, either answer it or ignore it, this forum is too good and professional for crap like this. The big shed forum is the place for moronic comments and replies.

Cheers...........Howard

I am with you on this one sirkit breaker

 

[High Tower]

if ur gunna try and use math to figure it out ur gunna be there a long time get ZE from the board and add your R1+R2 from your previous tests.

Or pace out the cable length, refrence the values from the BRB and add any deration factors and calculate it that way

 

[Sparky Ninja]

I am with you on this one sirkit breaker

You and SirKit need to look beyond a simple post and at the severity of people using equipment when they cannot display the competence to use it effectively.

It's dangerous, pure and simple.

 

[High Tower]

You and SirKit need to look beyond a simple post and at the severity of people using equipment when they cannot display the competence to use it effectively.

It's dangerous, pure and simple.

I have to agree with Widdler!! Lets not forget we are here to help and advise, and to be professional but remember guys Zs is a Live test, in a cramped ceiling rose or switch!

Could be a recipie for a small disaster if the OP is unsure

 

[Mark_Burgess]

just wondering no expert myself but isnt <ZS=ZE+(R1+R2)> better to find the zs in the first place as if your useing a loop impedance tester will be less then <ZS=ZE+(R1+R2)> due to parallel paths?

Cant get better than a live Zs reading in my opinion, the parallel paths won't go away or segregate just before the event of a fault.

 

[mickytuff]

this is a wind up, must be!!!!!!

 

[ian.settle1]

Read my link

What link??????????????????????????????

 

[ian.settle1]

Senior member since 2009.

Only because he has made a certain number of post

 

[High Tower]

Only because he has made a certain number of post

I have almost 800 posts and I'm still a retard

 

[J.C.E]

Spark of the year 2009...MARK2009

 

[nickblake]

I have almost 800 posts and I'm still a retard

ive made a lot of posts to ah the door two men wearing white jackets i wonder what they want lol