ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
HVDC Greece to Crete
by gfretwell - 08/06/20 02:28 AM
Electrician and Telecomunications
by tonymackers478 - 08/05/20 05:46 AM
310.15 (B) 7 Feeders
by HotLine1 - 07/31/20 02:29 PM
What would be the ideal solution?
by Fleppin - 07/21/20 12:42 AM
NESC question
by gfretwell - 07/16/20 04:17 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (gfretwell), 14 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
can size vs. ceiling height #52710 06/03/05 09:41 AM
Joined: Sep 2004
Posts: 138
R
royta Offline OP
Member
With the recent thread on can manufacture, I thought I'd ask what size cans you use for various ceiling heights. If you use 6" for 8 foot ceilngs, are you dropping down to an R30, or you still using an R40?

Work Gear for Electricians and the Trades
Re: can size vs. ceiling height #52711 06/03/05 10:36 AM
Joined: Feb 2003
Posts: 687
A
Active 1 Offline
Member
We use R-30's for most cases. For 2 story lights in big rooms Par38 90-100w work better but it costs much more.

Tom

Re: can size vs. ceiling height #52712 06/03/05 02:58 PM
Joined: Aug 2001
Posts: 329
S
Steve Miller Offline
Member
I second the motion ... R30s are usually fine and they're easier to get in & out of the can (more finger room). I just put a few in a sitting room with a 9'2" ceiling. No noticeable light loss.

Re: can size vs. ceiling height #52713 06/03/05 04:00 PM
Joined: Sep 2004
Posts: 138
R
royta Offline OP
Member
So, you're both using 6" cans regardless of ceilng height?

Re: can size vs. ceiling height #52714 06/03/05 05:41 PM
Joined: Feb 2003
Posts: 687
A
Active 1 Offline
Member
I don't remember seeing a house with a can bigger then 6" unless your count those old square things.

6" is just the standard size. 5" cans can use the R-30 65w also so there is not much differance except price. 4" can go 50w and same with the 3". Smaller cans can look nice but cost more and are harder to work with.

A taller cieling lets the light spread out farther. One rule of thumb is the light sperads out 1/2 the distance of the hight. In the back of some can catologs has a lot of details for different combos of cans, trims, bulbs, & hights. You can make 6" work for most things you just have to space them for what you need.

Someone could write a small book on lighting and different recomended spacing for what is needed. I would buy it. Otherwise it is lear by doing. Pay also attention to finished jobs that others have done. What works, what is shadowy, & find the goofs (like a can avove a frig).

Once you understand what is needed the next thing is making the customer understand. Too often they request too few cans to save. Then it can be a battle just to make them understand thy don't know what they need.


Tom

[This message has been edited by Active 1 (edited 06-03-2005).]


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
pcsailor
pcsailor
Minneapolis, MN, USA
Posts: 21
Joined: September 2019
Show All Member Profiles 
Top Posters(30 Days)
BigB 3
Popular Topics(Views)
268,485 Are you busy
202,918 Re: Forum
191,312 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3