Class I or class II appliance?

[Elidor]

Not 100% how it’s all assembled but would the enclosure and the rest of the installation be classed as an extraneous conductive part?

 

[Carter]

Seems to me this is more a matter of good installation practice. I've lost count of the number of scenarios where I've had to bring flexes in and out of containment, machinery and enclosures. With correct grommeting, glanding, well thought out cable support, routing and properly fixed cable restraint there is no issue. You've not created a new product or machine here and all your fixings will be CE app'd and fit for the intended conditions of use.
If however the intention is to run loose i.e. unrestrained flexes across metal edges and surfaces then THAT'S when an alarm would start to ring in my mind and your maintenance dude would have a fair point. It is a moving system after all and therefore subject to vibration, wind movement, wear, abrasions and of course Sod's Law!

All is conjecture without a few piccys.

 

[Des 56]

Seems to me this is more a matter of good installation practice. I've lost count of the number of scenarios where I've had to bring flexes in and out of containment, machinery and enclosures. With correct grommeting, glanding, well thought out cable support, routing and properly fixed cable restraint there is no issue. You've not created a new product or machine here and all your fixings will be CE app'd and fit for the intended conditions of use.
If however the intention is to run loose i.e. unrestrained flexes across metal edges and surfaces then THAT'S when an alarm would start to ring in my mind and your maintenance dude would have a fair point. It is a moving system after all and therefore subject to vibration, wind movement, wear, abrasions and of course Sod's Law!

All is conjecture without a few piccys.

Quote
Part of the original topic question

but if adequate measures of protection have been taken to prevent this potential issue is it still necessary to earth the cassette mechanism

regards Des

 

[Carter]

Quote
Part of the original topic question

but if adequate measures of protection have been taken to prevent this potential issue is it still necessary to earth the cassette mechanism

regards Des

Much obliged Des but as a layman his definition of adequate might not match yours and mine. A pic would certainly clarify things and enable a proper diagnosis.

 

[Engineer54]

These tubes/cassettes are purpose made to house these Class 2 blind motors, ....Sooooooo why would they need to be earthed????