SWA banjo.

VoltzElectrical · Jan 31, 2015

mykey said:
Not voted in the poll as it depends on the box type you are glanding to. See a lot of banjo's externally on IP rated boxes with a hole drilled through the casing compromising the IP rating.
Use the pirana or earth nuts on plastic boxes makes installs quicker and neater and no IP is compromised.they are over a £1 each but worth it.
Not seen the wiska brass plates but they look good to me as putting any type of lock nut internally inside the box is a fiddly job due to the prethreaded holes. Cheers Leesparkykent will give them a try

That is a myth. Why does a 6mm hole with a bolt through it compromise the IP rating when the 20/25/32 etc.. hole next to it with a gland through it does not?

Leesparkykent · Jan 31, 2015

VoltzElectrical said:
That is a myth. Why does a 6mm hole with a bolt through it compromise the IP rating when the 20/25/32 etc.. hole next to it with a gland through it does not?

Ive heard some sparks say the same with regards to the 6mm hole and bolt. I agree with you as a bigger hole with a gland through it is sat next to it lol.

davesparks · Jan 31, 2015

Tony said:
The poll makes no mention of Wiska boxes.

Banjo outside of enclosure
Banjo inside of enclosure
Piranha lock nut every time

So to use a Piranha locknut on a conventional box you need a locknut. That really makes sense.
About as much sense as this thread.

That thing in the picture is not a piranha nut, it's a wiska thing specifically for their boxes which is a bit rubbish really.

Barry White · Jan 31, 2015

VoltzElectrical said:
That is a myth. Why does a 6mm hole with a bolt through it compromise the IP rating when the 20/25/32 etc.. hole next to it with a gland through it does not?

The wiska box is IP 66 and the pre threaded knockouts are self sealing the mounting screws are external to the seal and its a myth to dril a hole in it compromises its IP rating ? I get the point you are making with standard boxes.

davesparks · Jan 31, 2015

VoltzElectrical said:
That is a myth. Why does a 6mm hole with a bolt through it compromise the IP rating when the 20/25/32 etc.. hole next to it with a gland through it does not?

The cable has to enter the enclosure therefore a hole is necessary and cannot be avoided and if the IP rating needs to be maintained a suitable sealing washer should be installed. The hole for the banjo bolt is not necessary and can be avoided this negating the possibility of compromising the IP rating.

Knobhead · Feb 1, 2015

davesparks said:
That thing in the picture is not a piranha nut, it's a wiska thing specifically for their boxes which is a bit rubbish really.

So what does a Piranha nut look like? I looked on Google and got the same picture.

telectrix · Feb 1, 2015

nuts....

Knobhead · Feb 1, 2015

No thread so of no use as a locknut.

Sorry no bids from grumpy git of Nottingham.

Engineer54 · Feb 1, 2015

telectrix said:
View attachment 27729nuts....

As i say the SWA earth nuts we use ''are'' threaded so can't be the actual piranha nuts you use. As far as i remember they come with a single grub screw, though i may be wrong on that one. They can be used in place of the gland kit's locknut, but rarely is.

Tidy Max · Feb 1, 2015

What do you by no thread? As in no thread on the inside of the nut? I've got a bag of them in my tool box and they are definitely threaded! Although i am now doubting who the manufacturer is :S i get them from cef anwyay.

telectrix · Feb 1, 2015

nuts are threaded. the ones i use are made by SWA and have several grub screw positions .

SJD · Feb 1, 2015

Tidy Max said:
What do you by no thread? As in no thread on the inside of the nut? I've got a bag of them in my tool box and they are definitely threaded! Although i am now doubting who the manufacturer is :S i get them from cef anwyay.

Piranha nuts are threaded, and also have grub-screw positions on each flat (so 6 positions). The come with 1 Allen key screw to lock the nut in place, and 1 cross-head screw and washer to fix an earth lead.

shanky887614 · Feb 1, 2015

SJD said:
Piranha nuts are threaded, and also have grub-screw positions on each flat (so 6 positions). The come with 1 Allen key screw to lock the nut in place, and 1 cross-head screw and washer to fix an earth lead.