lecsoft weird question

[rustynails]

on a lecsoft simulator I came across this...

When working on a construction site, the result of the resistance of the earth electrode and the rated residual operating current should not exceed

a)110v
b)50v
c)25v
d)230v

i put 110v not really understanding the question... but the answer was 25v confused.com

 

[shanky887614]

...So?

read the op

 

[Engineer54]

Now come on, this is all really BASIC stuff were talking about here!!!

 

[HandySparks]

Now come on, this is all really BASIC stuff were talking about here!!!

Is that aimed at me, E54?

 

[Engineer54]

NO, ...It's directed towards the thread itself, ....Safe touch voltage requirements and the calculations to obtain touch voltage values is very basic stuff!!

 

[Silly Sausage]

nicked this from iet

--------

Construction sites are governed by section 604 of BS7671.

....................................

I think the OP's question is well out of date!

Shanks, you need to ensure your research is upto date, 604 is the obvious giveaway! :smilielol5:


The 25V and 0.2s were dropped with the introduction of the 17th (see page 6 BGB), so the answer is 50V.

 

[telectrix]

cheers archie for confirming what i said in post#2. apart from eng54's post and 1 or 2 others, several posts have been absolute bollox.