Electrical junction box wiring

[xr4x4]

Maintenence free junction boxes installed in a location which is not accessible for maintenence, I&T.

how come i read from a link on here that they are.

Maybe someone was wrong. Can you provide a link to where it was written?

i can try, but it looked like an official document.

 

[ericmark]

Thanks for this. I intend to run the spurs to terminate in 13amp switched sockets. One for a dishwasher and one for a double switched socket for general use of worktop kitchen appliances. Toaster, food mixer iron etc.

This changes all. You are working in a kitchen as that means you need to register the work under Part P and at £100+ for LABC fees just not worth doing DIY it's a get a registered electrician in job.

As to maintenance free boxes vibration can cause screws to become lose and by using the spring clip type of box it means you don't need to check the connections during a service. On a metal batching plant vibrating as it makes each batch of concrete this is important. However a) I think chances of wires becoming lose due to vibration in a house is slim unless you live next to the railway. b) Even if you can check tightness very few house's are serviced so unlikely anyone with tighten them anyway. So really not worth worrying about.

 

[ban-all-sheds]

Type of JB, DIY or not, all of these are of secondary importance. Rebuke picked up on this, but it seems to be being overlooked.

I intend to run the spurs to terminate in 13amp switched sockets. One for a dishwasher and one for a double switched socket for general use of worktop kitchen appliances. Toaster, food mixer iron etc.

Rather a lot to have on one point on the ring. Don't use a JB and spurs - extend the ring to properly serve extra sockets.

And BTW...

I intend to install a 30amp 4 way junction box on the ring main. Can I run two spurs from this junction box as there are four connections? Ring main in, ring main out and two spurs.

A 4-way junction box means it has 4 terminals, or sets of terminals. Live, Neutral, Earth and ano.