On Monday, May 12, 2014 7:45:54 PM UTC+1, fred wrote:
In article , Tim Watts
dionic.net writes
On 12/05/14 09:29, fred wrote:
In article , Tim Watts
dionic.net writes
On 11/05/14 23:11, fred wrote:
In article , Tim Watts
dionic.net writes

Lol, you people. Its a Hoover Dustette. CPCs can be single insulated,
as all T&E
is, but can it be wrapped round the flex in the manner once used with
2 core
lighting circuits?

And yes, if you really want to bolt an earth on, the CPC could be bare
metal for all it mattered, so spiralling a bit of single insulated
around the main flex would be fine.

In contrast, I don't think it would be suitable, particularly for a a
portable appliance. Greater risk of mechanical damage and flexure
failure on the single core. I'd say buy the right stuff and replace the
existing flex.

This was a portable appliance designed to operate without a CPC (albeit
to an earlier standard).

I don't see the relevance, if it needs an earth now then it should be
done with a 3 core flex.

Perhaps the current flex cannot be easily removed or there is not room
to clamp the additional size of 3 core?

But if so, then I agree with you. However, I'm not getting uptight about
is as all the OP wants to do is add some belt and braces to an item of
equipment that never used to be earthed - it's not exactly a super
critical application.

I'm of the view that it should be done right or not at all. Best analogy
I can think of is the potentially insecure fixing of a safety railing to
a high roof. If there is no railing than all will stay well back and all
is well, if there is a railing then people will assume it is safe to go
closer to the edge and who knows what will happen.
Just offering another view.

Its done. The way its done it can go back to original any time. I'm not going to modernise it where its not needed. A 3 core lead wouldnt work well anyway, the design is clearly not set up to be earthed.

One remaining question is whether the bag can be washed. I've washed later ones, but not a 1930s black one. I guess I'll test it.


NT