On Sat, 19 Nov 2016 23:30:11 -0000, John Rumm wrote:

On 19/11/2016 18:51, James Wilkinson Sword wrote:
On Sat, 19 Nov 2016 02:46:04 -0000, John Rumm
wrote:

On 18/11/2016 20:43, Tim Lamb wrote:
In message , ARW
writes
On 18/11/2016 16:17, Tim Lamb wrote:

I have a 9" angle grinder which consistently trips a 20 amp MCB......

You mean it trips a B type 20A MCB?

Yes. Fine elsewhere on re-wireables. Makita.

My workshop socket outlets are end fed so limited to 20 amps.

My previous workshop initially had a 20A MCB protected socket circuit,
and things like my 3kVA site transformer would trip that on switch on
about one time in five. Its fine on a B32 or C20 though.

Fuses don't nuisance trip.

That is incorrect.

A C16 MCB will have a similar fault trip threshold to a BS3036 15A fuse.

Never seen a fuse blow with anything other than a short.

Get rid of the newfangled ****.

Off you go then...

I've never had an MCB or other crap in my house.

--
"I have left orders to be awakened at any time in case of national emergency, even if I'm in a cabinet meeting." - Ronald Reagan