adapt boxes in garden

[J.C.E]

morning guys

What do you guys normally do for a swa supply down to a garden office- where the customer doesnt want the swa viewable inside- so swa needs to be made off outside and then cores coming into the back of the consumer unit.

I know I could use a ip65 plastic box as I have fly banjo'ed at house end- but I like doing it either end

I know wiska do the banjo things for plastic wiska boxes- but don't think they do a 25mm one do they? (cable is 3core 10mm)

and the normally galv adapt boxes are not ip rated are they?

I know some people use the galv and just stick a gasket in there

what are your methods??

cheers

 

[hightower]

Why can't you banjo at an IP65 plastic box?

 

[telectrix]

or use earthing nuts?

 

[J.C.E]

Why can't you banjo at an IP65 plastic box?

be bit of naff connection no? metal on plastic

 

[stevethesparks]

If its tight then no, that's what the banjo is for? Otherwise, as already said use earthing nuts.

 

[hightower]

be bit of naff connection no? metal on plastic

Nothing wrong with terminating it without a flying lead if it already has one at the other end. But a banjo with a flying lead will be a great connection if you want it connected both ends - so long as the plastic box is strong enough to nip it up nice and tight.

 

[Richard Burns]

Banjos or piranha nuts would be fine on an insulated box, 3 core 10mm² will also fit a 20L gland if you want to use the wiska boxes and (expensive) gland plate at 20mm.

 

[Midwest]

Can't they get some paint, boxing or trunking? It's a shed for flip sakes. Some customers

 

[Risteard]

If its tight then no, that's what the banjo is for? Otherwise, as already said use earthing nuts.

I don't agree. Even if it's tight when installed the plastic can creep and you can lose the connection. If you must gland into a non-conductive box then you should sandwich the banjo between two locknuts inside the enclosure so that you have metal on metal connections. Otherwise you risk losing the earth to the armouring or giving a high impedance connection for the fault current.

 

[Risteard]

Nothing wrong with terminating it without a flying lead if it already has one at the other end. But a banjo with a flying lead will be a great connection if you want it connected both ends - so long as the plastic box is strong enough to nip it up nice and tight.

Again I must point out that no matter how tight plastic is liable to creep. A metal on metal connection should always be used.

 

[Dave OCD]

Again I must point out that no matter how tight plastic is liable to creep. A metal on metal connection should always be used.

This is why the brass earthing nuts would be ideal as they have a grub screw to lock onto the gland male thread regardless of how tight it is on the thread [or not] you'll still have good continuity.