MEM RCD - What BS ref?

[Tony Way]

Hi Guys

Just looked at a CU today and couldn't find a reference on a MEM 80A 30ma RCD ref:404ELHNC.

Anybody know what it would be - seems too old for 61008..

Thanks

Tony

 

[pevvers]

It'll probably be one of the old BS4293's then methinks. Remember the trip times on the 5x setting is 200ms instead of 300ms for a BS only device!

 

[Tony Way]

Many thanks.

Thankfully, 5x came out at 15.7ms.... Phew

Tony

 

[pevvers]

Not a problem. Remember that if this a front end RCD protecting the whole board and you're doing a PIR, then it should be coded as a 4 as in the event of any circuit having a fault the whole installation will trip out...

If not doing a PIR, then don't worry about it, although it's definitely something worth discussing with the client,