.r.c.d. Ramp test

[underpar12]

HELLO
on way to job tomorrow to ramp test a 30ma r.c.d,would i be right in saying any reading below 15 ma is unsatisfactory and over 15ma is satisfactory.many thanks

 

[telectrix]

i'd not be happy with 15mA. 25mA minimum IMO.

 

[ian]

would not be happy with 15ma either, be looking for 25 minimum.

 

[underpar12]

thanks for your replies , do i ramp test with all loads /m,c,b,s in the off postion twice ,then with m,c,b,s on to see if any earth lekage is present .

 

[Sintra]

Idealy 25 - 29mA would be the optimum figure, although any figure above 15mA and below 30mA the RCD will be within limits.


Sent from my iPhone using Tapatalk.

 

[Sintra]

thanks for your replies , do i ramp test with all loads /m,c,b,s in the off postion twice ,then with m,c,b,s on to see if any earth lekage is present .

Yea ramp test at source with loads disconnected.


Sent from my iPhone using Tapatalk.

 

[Sparky Ninja]

HELLO
on way to job tomorrow to ramp test a 30ma r.c.d,would i be right in saying any reading below 15 ma is unsatisfactory and over 15ma is satisfactory.many thanks

That would indicate that it would trip at x 1/2, which is unacceptable. Anywhere < 23-24mA would suggest replacement for me.

 

[underpar12]

customer has told me the consumer unit is a square d with a R.C.D.main switch, about 12 years old.

 

[Risteard]

As long as it doesn't operate at half the rated residual operating current and does operate within (assuming BS EN 61008/61009 device) 300mS at rated residual operating current then it meets the requirements. Plenty of devices operate below 25mA - nothing faulty about them though.