RCD test without RCD

[jonesyc894]

Is there anyway I can test an installation without an RCD so I can be sure when I changethe board the RCD will trip in time? Or calculation, such as V/R eg 230/Zs.????

 

[Plonker 3]

Right before I answer. What qualifications do you have? Are you a electrician? Is this question for real?

 

[davesparks]

Edited due to Dillbs answer being better

 

[worzol99]

What a ??? Can't say what i really think of this question!!

 

[Octopus]

Just read the previous posts.....

 

[dan86]

^^what he said, about what they said ^^
wonder if the OP will return...

 

[GMES]

^^what he said, about what they said ^^
wonder if the OP will return...

About as much chance as Gary Glitter making one to the charts

 

[trev]

Is there anyway I can test an installation without an RCD so I can be sure when I changethe board the RCD will trip in time? Or calculation, such as V/R eg 230/Zs.????

Try to have a good hard think about that one Jonesy. Then come back to us mate

 

[micknew]

Is there anyway I can test an installation without an RCD so I can be sure when I changethe board the RCD will trip in time? Or calculation, such as V/R eg 230/Zs.????

DIYer?

 

[Marvo]

DIYer?

Looking at previous posts I don't think so but the opening post is a bit confusing so I can see why people are asking the question.

 

[robsparky1975]

Whats an rcd? never heard of one :75:

 

[Richard Burns]

Since the maximum Zs required for a 30mA RCD to trip is 1667Ω as this meets the RA x Idn <= 50 V, you can ensure that the disconnection times will be met before installing an RCD.
Being able to test the RCD to ensure correct operation by disconnection within 40ms at 5 x Idn is not possible without the RCD.

 

[NDG Elecs]

You are a nice fella Richard. Hopefully the OPs Zs will be somewhat lower though, haha!!

 

[tony mc]

Is there anyway I can test an installation without an RCD so I can be sure when I changethe board the RCD will trip in time? Or calculation, such as V/R eg 230/Zs.????

Normally the questions around RCD's are


If I change the fuseboard how can I be sure the RCD will hold etc etc so this is a new one!


Looking at the ops previous posts he is working as a electrician so I hope this is just a blonde momment question!

 

[Eddiesparks]

Insulation resistance. If you dont know how to do this then for god's sake dont change a board.

 

[trev]

Insulation resistance. If you dont know how to do this then for god's sake dont change a board.

This test will tell you if an RCD will trip?
News to me Eddie.

 

[Eddiesparks]

We all ask silly questions least of all me though so wont hold it against you. If you do know what IR testing is.

 

[Eddiesparks]

This test will tell you if an RCD will trip?
News to me Eddie.

Nine times out of ten trev!

 

[trev]

Nine times out of ten trev!

When the RCD hasn't been installed?
An IR test is usually performed with the cables in question disconnected, please explain how a result of, for arguments sake, 100 Megohms between line and neutral will tell you if an RCD will trip in the event of a fault occuring on that circuit at an unspecified point in time in the future.

 

[telectrix]

you can't have rabbit pie without a rabbit.