Conduit

geome · 8 Jan 2011

I am wiring a garage in pvc 20mm conduit
For the drops to the sockets light switches etc what type of tee piece is best to use a straight tee piece or a round junction tee with cover

planemad · 8 Jan 2011

I would use an inspection tee. I normally use metal conduit in my factory and always inspection tees for the drops that continue.

http://www.google.co.uk/products/ca...ult&ct=result&resnum=3&sqi=2&ved=0CC4Q8wIwAg#

Wangerman · 8 Jan 2011

As the guy says above although on a long run I use t boxes makes it easier to get the draw wire through but for short runs like a garage then inspection bends and tees are more than ample

geome · 8 Jan 2011

Thanks for your replies
One more question on the lighting circuit for the switching wiring I normally use junction boxes are these available for conduit

planemad · 8 Jan 2011

Hi.

Why would you need to use a JB for a new install? I can't think of a reason but maybe someone could enlighten me.

MrTinker · 9 Jan 2011

geome said:
junction boxes are these available for conduit

Mmmm Erm are you sure you are up for doing this

I'll give you a clue they start with, Cho.......

ColJack · 9 Jan 2011

because the OP probably plans to use T+E and therefore needs somewhere to connect the switch drop to the live feed, rather than doing it properly in singles..

geome · 9 Jan 2011

MrTinker said:
geome said:

junction boxes are these available for conduit

Click to expand...

Mmmm Erm are you sure you are up for doing this
I'll give you a clue they start with, Cho.......

Mmmm Mmmm ! wise guy typical response from a scouser

Spark123 · 9 Jan 2011

Run the circuits in conduit singles then there is no need to use junction boxes as all the connections are done at the accessories.

What sort of garage, does it take it's power from a domestic dwelling? Are you in England / Wales?

electronicsuk · 9 Jan 2011

ColJack said:
because the OP probably plans to use T+E and therefore needs somewhere to connect the switch drop to the live feed, rather than doing it properly in singles..

If that's the case, good luck! It sounds as if OP is going to use a horizontal run of conduit around the perimeter of the room, in which case, short of using trunking, you're going to fall foul of grouping factor. That's if you can even manage to fit enough cables for a ring final and lighting circuit into 20mm conduit.

Wangerman · 9 Jan 2011

electronicsuk said:
ColJack said:

because the OP probably plans to use T+E and therefore needs somewhere to connect the switch drop to the live feed, rather than doing it properly in singles..

Click to expand...

If that's the case, good luck! It sounds as if OP is going to use a horizontal run of conduit around the perimeter of the room, in which case, short of using trunking, you're going to fall foul of grouping factor. That's if you can even manage to fit enough cables for a ring final and lighting circuit into 20mm conduit.

If I have to pull T and E through conduit I would always use 25mm and that can still be tight.

plugwash · 9 Jan 2011

geome said:
Thanks for your replies
One more question on the lighting circuit for the switching wiring I normally use junction boxes are these available for conduit

You can use terminal block or crimps inside a conduit box to make connections if you really need to. However if you are doing a full conduit system (rather than just conduit drops) you should really be using conduit singles (as others have said pulling T&E through a conduit system is a nightmare) and shouldn't really need to make any joints other than at accessories.

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