ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Explored: Basics of PLC
by niamishra. 10/19/18 04:44 AM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 10/18/18 08:47 PM
220/230/240V 60Hz Systems
by dsk. 10/17/18 01:25 PM
PLC/HMI Enclosure C2, D1
by ghost307. 10/16/18 03:31 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 8 guests, and 25 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Metal boxes #212638
01/28/14 09:06 PM
01/28/14 09:06 PM
S
schenimann  Offline OP
Member
Joined: Feb 2008
Posts: 193
Western North Carolina
I've got a new house to wire. It is about 5k sf. The HO wants metal boxes throughout. What is the most efficient yet best method of doing this?

Work Gear for Electricians and the Trades
Re: Metal boxes [Re: schenimann] #212639
01/28/14 09:39 PM
01/28/14 09:39 PM
T
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
Deep side-bracket boxes will dominate your install.

http://www.protectconnect.com/spinningProducts.html

These fellows ^^^ introduced the best thing going -- at the top of the market. Bad timing.

They would've been absolutely ideal for you.

They have now been quasi-cloned by the NEMA crowd. Read any recent copy of EC Magazine.

There are some nifty Romex-to-metal gadgets out there. I leave it to others who work Romex to rate them.

As for MWBCs -- they seem to be out of favor.

For such a large home I'd expect a hefty Service, 400A, and perhaps a sub-panel.

The latest trend in McMansions is towards star distribution -- of water, of data-com, and even of electric power.

It should be interesting.



Tesla
Re: Metal boxes [Re: schenimann] #212640
01/28/14 10:21 PM
01/28/14 10:21 PM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,036
Brick, NJ USA
IMHO, you may want to consider 4" square w/side brackets for ease of access with mud rings, as opposed to a 3-1/2" deep device box. It's faster to get in to bond, and a little wider on the sides. Easier to work with IMO, but either way, the $$ is much more than plastic boxes.

Include $$ for bonding the boxes. Green screws, pigtails, etc.

What reasoning did the HO give for metal boxes?? He may change his mind seeing the price.

It is rare,very rare to see metal boxes in resi.


John
Re: Metal boxes [Re: schenimann] #212642
01/28/14 11:52 PM
01/28/14 11:52 PM
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Metal boxes? That's what I use! Both for customer service calls, as well as for rewiring my own house.

"Bracket boxes" dominate - standard depth 4-S boxes with the appropriate mud rings.

Correction: I use mud rings a bit deeper than I need, and set the boxes back to compensate. You'll want to make a spacer to help you set the boxes to the right depth. This practice means the drywall guy won't be fighting the screws on the face of the box, and things won't get beat up nearly as much.

Checklist: Boxes. Bracket boxes come in cases of 25.
. Mud rings
. Green screws w/ pigtails
. Cable clamps (boxes of 100)
. Mounting screws (short drywall screws are fine)

For dryer and range receptacles you'll want to use the larger 4-11 boxes, deep style. You can use a separate bracket to mount these.

Re: Metal boxes [Re: schenimann] #212644
01/29/14 11:17 AM
01/29/14 11:17 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,036
Brick, NJ USA
Add to Renos comments that there are 4 square, side bracket boxes with integral NM and AC clamps.



John
Re: Metal boxes [Re: schenimann] #212647
01/29/14 02:30 PM
01/29/14 02:30 PM
S
schenimann  Offline OP
Member
Joined: Feb 2008
Posts: 193
Western North Carolina
The ho apparently enjoys building houses. He has a few 5k-7k houses around the country that he has built. He built one in Virginia that has 5 full masonry chimneys. He didn't like it so he built another and sold that one. He is very involved in the building process. He wants all metal boxes, copper plumbing, etc.

This is certainly a step up for me. I usually do smaller houses, remodels, service work.

Re: Metal boxes [Re: schenimann] #212650
01/29/14 03:22 PM
01/29/14 03:22 PM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,298
Estero,Fl,usa
I guess this is just a testament about how effective Carlon's marketing was. I am old enough to remember when electricians were fighting plastic boxes, swearing they would never use them. Florida pretty much makes at least a few of them mandatory if you are framing with steel studs. (another popular thing here)
You are required to bond steel studs and the easiest way to do it is with a metal box or a plastic box with a bonded metal mounting tab.


Greg Fretwell

Featured:

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

 

Member Spotlight
akmaster
akmaster
alaska
Posts: 70
Joined: June 2012
Show All Member Profiles 
Top Posters(30 Days)
sparky 11
Popular Topics(Views)
250,486 Are you busy
188,051 Re: Forum
177,689 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.028s Queries: 15 (0.005s) Memory: 0.9870 MB (Peak: 1.1440 MB) Zlib enabled. Server Time: 2018-10-20 08:36:20 UTC