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Earth Banjo Securing Practices

AMK


Recently, I’ve noticed an increasing trend in the use of self-tapers to secure earth banjos. The other  end of the cable has an earth tail from the banjo, secured with a 6mm bolt and nut. Has anyone else observed this practice, and what are your thoughts on its effectiveness or potential implications? I’d be interested in hearing different perspectives or experiences with this setup. 
-Andrew

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  • I viewed the photo as yet another example of carp work. If I was supervisiong the work the installer would have to remove the tech screws and re-do the termination with a very blunt and shortly worded warning about comptency and good workmanship.

    My view is the followin an SWA, unles there is a specific technical reason for doing so, the paint that will be under the earth ring (AKA Banjo) needs to be cleaned off prior to termination. Then the gland back nut done up tight. The earth ring bolted throught with plated washers and a plainted steel bolt (not brass) and a spring washer or self locking nut. If the galnd plate is removable then a supplementatry earth from the gland bolt to the earth bar.

    JP

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  • I viewed the photo as yet another example of carp work. If I was supervisiong the work the installer would have to remove the tech screws and re-do the termination with a very blunt and shortly worded warning about comptency and good workmanship.

    My view is the followin an SWA, unles there is a specific technical reason for doing so, the paint that will be under the earth ring (AKA Banjo) needs to be cleaned off prior to termination. Then the gland back nut done up tight. The earth ring bolted throught with plated washers and a plainted steel bolt (not brass) and a spring washer or self locking nut. If the galnd plate is removable then a supplementatry earth from the gland bolt to the earth bar.

    JP

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