trunking and tray

[scotsparky]

hi scotspark when i done my time we made all our bends , sets and flages
scot is langside college still there?

Dont know about Langside I swearved my time with BK in Renfrew and went to Reid Kerr

TE Chomper i have never seen the book just shown at college and practice on site. with trunking the bigger the easier i find biggest i have done is 12"x12" square,pencil and Jigsaw and away i went.

 

[stretchyboy]

there's a good book by Christopher Shelton were he shows the points to cut trunking to make various angle bends - how to make little flanges to do your pop rivets.

POP RIVETS ! generally these are considered to not provide a good enough earth connection, aren't they?

 

[benji]

pop rivets?it depends on which rivet you use/size of hole drilled ect.ect.and what tool you use.When installed correctly you can get one hell of a fixing

yourse benji

 

[scotsparky]

POP RIVETS ! generally these are considered to not provide a good enough earth connection, aren't they?

If its trunking and you are making a bend normally there is a section of trunking Uncut therfore providing a continuous link through the bend. It when its jointed you have to be carefull and i would use the small Earth tags.

 

[stretchyboy]

It's worth mentioning though just to clarify as some people on here may just assume that pop rivets are ok to use in place of screws/ nuts+bolts. I'm fairly sure that they shouldn't be relied upon for earthing purposes as they cannot be tightened and some alloys are not very good conductors.

 

[boatnik1]

If you are hanging the tray vertically it can be rolled to almost any radius at most sheet metal shops very cheaply as it only takes a few minutes to roll each length. Trunking is more difficult, Many cuts through the sides (possibly even every few inches) to allow the trunking to be formed into a radius, and get the cover rolled at a metal shop to the required radius.
Finished appearance is almost a perfect circle as the cover is the most noticeable part.

 

[Graeme Harrold]

Being able to work with stock materials is a skill in its own right and can get you out of many tight spots. Its well worth the time to practice and get to know where and how to cut to get the desired angles. The day you dont have a preformed angle to hand will be the day you wished you could whip out a hacksaw with confidence and cut away.........

as to rivets, material selection is critical, remember "easy fit" rivets are more likely to be "easy fail" !!!

 

[Leavern]

Swifts make an adjustable bend for their cable trays.
Catalogue says 30 to 90 degrees but with a small mod they can be opened almost straight !!
Part numbers are FAB (Flat Adjustable bend?)
A lot quicker and neater too.

 

[mechelec]

wire basket tray would be a doddle to form in a circle