Section title referring to 'Shielding' replaced by 'Grommets used for cable protection'. Reason: 'shielding' commonly refers to shielding against electrical interference, whereas mechanical protection is intended here.
I have inserted a reference to 'sleeved grommets', meaning the ones with a sort of tail which prevents electrical wires continually bending at one short point and spreads this bending over a longer length of the electrical cable. Example: the type of grommet you've almost certainly got on your mobile phone charger and many other items of domestic electrical items. As I am not a technical expert in this area I would defer to people who are: I checked terminology on websites of grommet suppliers.
I have also inserted words referring to electrical cable damage and to plastic casings, which also need grommets.
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