WYLEX 100mA 80A RCD

[Freetrader]

Hi all,

Does any one know if a WYLEX 100mA 80A RCD WEM 80/2 is time delayed.

It currenty protects a TT system and I will be upgrading the consumer unit to an 17th edition unit with 2X30mA RCD's.

I worried about discrimination, and dont want it tripping before the 30mA RCDS's

I know removing it may be an answer, but it is useful as an Isolation Swtch.

Thanks in Advance

 

[Andy™]

there are available in both standard & time delay. it will have it marked on the RCD if it is TD or not

can you not swap it for a 100A isolator?

 

[Badger]

[quote name='Andy

 

[Andy™]

if that is connected already to the tails side of the install before the c/u then upgrading that install wont require a 100mA because of the 30mA x 2 that are being used on the new 17th c/u basically you can throw that rcd out :x

which i what i meant by 'can you not swap it for a 100A isolator?'!

no point having stuff you dont need!

 

[SPECIAL LOCATION]

Hi all,Does any one know if a WYLEX 100mA 80A RCD WEM 80/2 is time delayed.

It currenty protects a TT system and I will be upgrading the consumer unit to an 17th edition unit with 2X30mA RCD's.

I worried about discrimination, and dont want it tripping before the 30mA RCDS's

I know removing it may be an answer, but it is useful as an Isolation Swtch.

Thanks in Advance

If as you say its already in circuit, perhaps an RCD test would be a quick way to find out?

e.g. stick your tester on it.....

If all the response times take a bit longer.....

It could well be time delayed!

If they are all within non-delayed spec...

Then its probably not!

:x

 

[Evans Electric]

Take it out , it will probably kick out when the 30mA s trip ,which negates the point of the two devices in the 17th board.

Deke

 

[SPECIAL LOCATION]

Take it out , it will probably kick out when the 30mA s trip ,which negates the point of the two devices in the 17th board.Deke

Generally a 100ma shouldn't trip with 30ma in series with it.

Just like traditional TT split board with 100ma main switch & 30ma for sockets/shower etc.. e.g. page 24 OSG fig 3.2.

100ma should NOT trip @ 1/2 rated trip current. (50ma)

but 30ma should have tripped tripped @ 50ma!

:|

 

[Andy™]

but an earth fault my well be greater than 100ma, and if the 100ma is not time delay, good chance both will trip

 

[Apache]

[quote name='Andy

 

[Apache]

Mind so I am, bedtime methinks

:z

 

[Andy™]

woke up and couldnt sleep.... so came here

 

[a1]

[quote name='Andy

 

[Freetrader]

Thanks Everyone,

replacement with a 100A isolation switch seems best option.

Regards