ELECSA Certification Scheme RE: IR, COntinuity and Elecsa assessment

[j_wheatley]

I will admit to not having a full range of knowledge yet, I was of the understanding that you could either measure Zs or calculate it using (R1+R2)+ Ze which I already measured. is this not correct? not being smart, really just want to pick up everything I can. thanks

 

[Richard Burns]

It is not actually required to do a live Zs test as the calculation from Ze and R1+R2 is the worst case, however it is always a good idea because it is at least a final check that all is OK.

 

[davesparks]

It is not actually required to do a live Zs test as the calculation from Ze and R1+R2 is the worst case, however it is always a good idea because it is at least a final check that all is OK.

Oh well that's ok then, shall we use the value of Ze obtained by enquiry instead of measuring that too?

Let's just not bother doing any testing and calculate the whole lot shall we?

After all the magical RCDs will save the day!

 

[Guest77]

I will admit to not having a full range of knowledge yet, I was of the understanding that you could either measure Zs or calculate it using (R1+R2)+ Ze which I already measured. is this not correct? not being smart, really just want to pick up everything I can. thanks

Gasp lol, well at least you have the DB in your house for the buffoons at elecsa to look at, quite frankly I am appalled at the lack of standards now in the trade, embarassed actually, providing you have 5 weeks under your belt, electricity in your house and 400 sobs in a brown envelope these days you are in pmsl.

 

[Leesparkykent]

[QUOTE ] I will admit to not having a full range of knowledge yet, I was of the understanding that you could either measure Zs or calculate it using (R1+R2)+ Ze which I already measured. is this not correct? not being smart, really just want to pick up everything I can. thanks [/QUOTE]

Reg 313.1

 

[Guest77]

Oh well that's ok then, shall we use the value of Ze obtained by enquiry instead of measuring that too?

Let's just not bother doing any testing and calculate the whole lot shall we?

After all the magical RCDs will save the day!

:rofl: lol that made me laugh, in Richards defence he is only stating the rules, although they stink regarding calculations of ZS lol

 

[j_wheatley]

thanks lee, so calculation is acceptable. I just need to retest the cooker R1+R2 as this reading is way off. mdj, as for only having to have 5 weeks under my belt and a cash payment, not entirely right for me anyway, did start this whole process a while ago but with having to hold down a full time job, and not even being able to get any experience by offering to work for free, just studying the books cannot give me all the knowledge I need. doesn't mean im going to get a self certifying scheme under my belt and go around doing things out of my league but I have to make a start somewhere. at least it means I can get going and build practical knowledge to go with the theory that way I can make a career myself, not cut corners and establish a good name and working practice if I could have afforded to be an apprentice that's what I would have done, but it didnt work out that way so this is how I have to do it. as long as I work safely and check, double check and triple check my work I don't think im doing wrong. thanks for your replies

 

[Guest77]

well how much experience on site have you obtained?

 

[Leesparkykent]

thanks lee, so calculation is acceptable. I just need to retest the cooker R1+R2 as this reading is way off. mdj, as for only having to have 5 weeks under my belt and a cash payment, not entirely right for me anyway, did start this whole process a while ago but with having to hold down a full time job, and not even being able to get any experience by offering to work for free, just studying the books cannot give me all the knowledge I need. doesn't mean im going to get a self certifying scheme under my belt and go around doing things out of my league but I have to make a start somewhere. at least it means I can get going and build practical knowledge to go with the theory that way I can make a career myself, not cut corners and establish a good name and working practice if I could have afforded to be an apprentice that's what I would have done, but it didnt work out that way so this is how I have to do it. as long as I work safely and check, double check and triple check my work I don't think im doing wrong. thanks for your replies

Yes calculation is an allowable method to determine Zs. As Richard pointed out in #2 Ze+(R1+R2) will give you the worst case value.

 

[Simonslimline]

Calculating Zs will not highlight any high resistances that may be present through MCB's etc.

Always best to directly measure it.

 

[Guest77]

Thats my boy, the Trainees know more than a lot of the sparks here chuckle

 

[Leesparkykent]

Thats my boy, the Trainees know more than a lot of the sparks here chuckle

Yawn..

 

[j_wheatley]

testing hardly anything which is where I want to gain more experience, I've worked installing external lighting and its maintenance for 10 years, where I could get it ive got experience on house rewires, new circuit installs, boiler installation, downlight installs. these are few and far between though.

 

[Guest77]

Yawn..

Hey Lee you love the banter really

 

[Leesparkykent]

Hey Lee you love the banter really

Yeah i do really lol :icon12: