galvanised conduit outside

M cebee · 06-09-2011 9:11am #1

i see this a lot of places with through boxes and dome covers for outside ighting

is it acceptable at all

or should it be a continuous piece if it's outside

redgapjack · 06-09-2011 10:02am

The through boxes are for the drawing of cables and they are usually placed every two lenghts of conduit or after two bends.

06-09-2011 10:06am

I would use a T box with a gasket and stuffing gland of outside lights. Continous is best if possible. Don't forget paint to prevent rusting.

M cebee · 06-09-2011 10:16am

Do those tees or domes for outside lighting comply

redgapjack · 06-09-2011 11:47am

If using singles, i would tend to use flexible conduit glanded into the box and fitting and terminate the cables direct into the fitting

Not sure about the paint thou, i'd put some galv paint on where we threaded for boxes and couplers but not the entire conduit.

06-09-2011 12:11pm

put some galv paint on where we threaded for boxes and couplers but not the entire conduit.

Exactly my point.

M cebee · 06-09-2011 12:45pm

what is the ip rating of a galvanized box and cover

redgapjack · 06-09-2011 1:45pm

2011 wrote: »

Exactly my point.

Jaysus imagine that 'ahh that's great work lads but while your there will you stick a bit of paint on the conduit....i like blue what do yous think?'

Wouldnt surprise me :rolleyes:

paddy147 · 06-09-2011 1:49pm

redgapjack wrote: »

Jaysus imagine that 'ahh that's great work lads but while your there will you stick a bit of paint on the conduit....i like blue what do yous think?'

Wouldnt surprise me :rolleyes:

MIght even get asked to dig a trench too,while you are at it.:pac::pac::D

redgapjack · 06-09-2011 1:56pm

paddy147 wrote: »

MIght even get asked to dig a trench too,while you are at it.:pac::pac::D

Ohh that has happened!

Did you wire up that RCBO and pond yet?

Bruthal · 06-09-2011 1:59pm

Whats an rcbo for?

paddy147 · 06-09-2011 2:03pm

redgapjack wrote: »

Ohh that has happened!

Did you wire up that RCBO and pond yet?

Not yet,as the girlfriend has me out choosing paint colours and buying this morning and afternoon with her in Fleetwood Trade.

Al this picking and choosing is tough work you know.:pac::D

Anyway......................

06-09-2011 6:53pm

redgapjack wrote: »

Jaysus imagine that 'ahh that's great work lads but while your there will you stick a bit of paint on the conduit....i like blue what do yous think?'

Wouldnt surprise me :rolleyes:

The use galvanized paint on all cuts for steel conduit, tray, trunking and unistrut is specifically mentioned in the scope of work for many large projects.
This would apply more so to parts of installations that are in outside areas (but often to indoors too).
It makes sense as the steel is protective zinc layer is lost once the steel is cut (or threaded) causing these points to rust rapidly.
Electrical contractors would often have to submit costs as part of their tender package for this.

06-09-2011 7:02pm

M cebee wrote: »

what is the ip rating of a galvanized box and cover

To be honest, I don't know. Once the M4 hole at the back of the box has a bolt in it and the proper gasket is used it would be fine on a wall outside. I would normally install a T box on the wall with conduit entering and leaving left and right for and a flex coming from the final spout that is facing down (this will reduce the ingress of moisture). I would use a stuffing/SWA gland in this spout for a flex or SWA to feed the light.

I have seen this done many times with no issues.

galvanised conduit outside

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