Mains switch fuse

[jonathonward123]

Hi, what is the best way to terminate swa at supply end when using switch fuse?

Is the only option using a metal clad switch fuse or can a non combustible Bakelite switch fuse be used with some form of metal through box for terminating swa?

I know the metal clad switch fuse is ideally used, but can the Bakelite option be used as it is non combustible?

cheers

 

[Murdoch]

Metal class is the best option

 what are you actually doing?

 

[jonathonward123]

Supply to mains consumer unit in a renovated property. Already ran the swa cable, was just wondering what people’s thoughts were between using metal clad and the Bakelite switch fuse. Obviously the Bakelite is half the price and smaller if space is an issue.

 

[revjames]

metalclad for me and make sure you use the 'frying pan' earth connection on the swa gland

 

[jonathonward123]

Never heard it called ‘frying pan’ ,old electrician always just called it ‘monocle’ haha

Every day is a school day.

But yes I always use them.

cheers

 

[kerching]

metalclad for me and make sure you use the 'frying pan' earth connection on the swa gland

Or a far better solution is an earthing or Piranha nut, if you have space

 

[revjames]

Or a far better solution is an earthing or Piranha nut, if you have space

not familiar with those Kerch unless they are called something else here.....

 

[jonathonward123]

Or a far better solution is an earthing or Piranha nut, if you have space

Are those the thick nuts with ridges on them and a earth screw on them for a crimp?

(best way I could describe them)

 

[kerching]

not familiar with those Kerch unless they are called something else here.....

https://www.screwfix.com/p/earthing-nut-20mm-2-pack/77809?tc=OT7&ds_kid=92700055281954475&ds_rl=1249401&gclid=EAIaIQobChMIi96juKK07gIV2N_tCh2chg0PEAQYASABEgIA1fD_BwE&gclsrc=aw.ds

BFO brass nut

locks onto,gland with a grub screw so,maintains continuity . Earth tail bolts to it

i use loads of them up to 50mm

Are those the thick nuts with ridges on them and a earth screw on them for a crimp?

(best way I could describe them)

Yep

thick nuts.....good description

 

[Sharpend]

You could use one of these 

https://www.cablejoints.co.uk/sub-product-details/street-lighting-charles-endirect/charles-endirect-central-earth-terminal-swa-cables

they have been accepted by industry for use in these circumstances.