Provided the conductor is of the correct size to not require mechanical protection. I suggest a 6mm bit of green and yellow, you can read more in the regs.
A banjo is a tag, usually used with SWA glands to allow the connection of a cable to the Armour. It is roughly banjo shaped with a big hole in the middle, like most Banjo players!
I was being sarcastic of course as I would rather we all used the correct terminology of an Earth Tag! North of Hadrians wall they are called "Frying pans". I get annoyed when people use all these other words, better if we call them by the correct name. You are of course correct on the earth tag application and its use.
If there is a seperate conductor acting as a CPC within the armour cable itself not really any need for the earth tag,unless the clients has specified they are fitted. Depending on the type of motor often there is an external earth connection on the motor casing that may have to be used, particularly where there are insulating parts on the flanged connections to the pipework.
A banjo is a very specific sort of earth tag, there are many others, not least the ones with all the do not remove words embossed, while 'banjo' offers a clarity and succinctness the generic word cannot.
For the same reason we have grit, pebbles, shingle, rocks and boulders, and we lose a lot of nuance if the only word we are allowed to use is 'stone' I will keep using 'banjo' if you know what is meant - just expand the glossary to match the current practice.
