Rcd

[Pgs electrics]

An apprentice asked me today he was testing a ring main with just a mains tester when he put the tester across live and earth the red tripped. But when he put the tester across nuetral to earth the Rcd didn't trip I explained that he needs a proper mft tester and to test properly but he kept asking me why the rcd didn't trip with tester across neutral to earth and I didn't really explain to him why.   Any good explanations to tell him please 

 

[Andy™]

:facepalm:

 

[Kurt]

:facepalm: :facepalm: :Welcome:

 

[rapparee]

What do you mean by mains tester? A multimeter or something else.

 

[Sharpend]

An apprentice asked me today he was testing a ring main with just a mains tester when he put the tester across live and earth the red tripped. But when he put the tester across nuetral to earth the Rcd didn't trip I explained that he needs a proper mft tester and to test properly but he kept asking me why the rcd didn't trip with tester across neutral to earth and I didn't really explain to him why.   Any good explanations to tell him please 

So you didn't explain to him, presumably because you didn't have time, so explain to us?

 

[ProDave]

What do you mean by mains tester? A multimeter or something else.

A test lamp. He will be telling us he does continuity with a bell box as well.
 

 

[SLIPSHOD & SLAPDASH]

Before this gets out of hand.............You state you are a time served electrician with test & inspection skills, this means you should really know this as its such a basic thing ?

Now if you were a Diyer or apprentice  then it would be understandable you may not know.

 

[Tony S]

Location: Wirral

Skills: Domestic, Commercial, Industrial, Hazardous Areas, Inspect &Test ?

Training: Time Served ?

Employment: Self Employed, Employed ?

Country: United Kingdom

The only two bits I believe in red.

 

[Andy™]

worst part is the 'training' the apprentice will be getting from him

 

[Evans Electric]

How would you explain it to him ?...........given that it would take about 3 seconds  .  

 

[Andy™]

better idea, send the apprentice here