ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

ECN Shout Chat
Top Posters(30 Days)
Admin 19
Recent Posts
fuse rejectors
by NORCAL. 03/29/17 01:44 AM
Old decora style outlets
by NORCAL. 03/29/17 01:41 AM
NFPA stuff
by gfretwell. 03/28/17 08:08 PM
Anyone hiring inspectors?
by HotLine1. 03/27/17 08:03 AM
ESA Arc flash course
by TheShockDoctors. 03/24/17 10:15 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
231,713 Are you busy
166,612 Re: Forum
160,777 Need opinion
Who's Online Now
0 registered members (), 56 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#102664 - 07/18/06 01:47 PM Meter heights and Masts  
dougwells  Offline

Joined: May 2003
Posts: 1,137
kamloops BC Canada
Just wondering what others think.
When doing service upgrades i will run across where theres not enough height on the wall to mount the meter at the prescribe height and have enough area to support the mast.

the first pic raised an eye brow as my inspector told me there should be 4 ft of mast between the top of meter and the highest support bracket.

[Linked Image]

this 2nd pic is one i did to compensate for the lost height. of course this pic is much more work to accomplish

[Linked Image]

[This message has been edited by dougwells (edited 07-18-2006).]

Tools for Electricians:

#102665 - 07/19/06 12:09 AM Re: Meter heights and Masts  
twh  Offline
Joined: Mar 2004
Posts: 903
Regina, Sask.
I'm not familiar with this "4 foot rule." I'm interested in where it comes from.

Appendix B, 6-112(4)(c) is a rule about the projection above the roof.

#102666 - 07/19/06 12:14 AM Re: Meter heights and Masts  
dougwells  Offline

Joined: May 2003
Posts: 1,137
kamloops BC Canada
I think its an BC Hydro (POCO) requirement

#102667 - 07/22/06 12:44 AM Re: Meter heights and Masts  
jay8  Offline
Joined: Jul 2005
Posts: 183
Vancouver, BC
4 feet of mast between the top of the meter and the highest support?? that means you have four feet to install the three required supports on the wall for the mast. That seems a little odd as a rule, I could see some installs where you had no choice, but imagine if you had 10 feet above the meter until you hit the soffit, all your brackets are grouped in the lower 4 feet. I would Checdouble check that rule again.

#102668 - 07/22/06 12:33 PM Re: Meter heights and Masts  
dougwells  Offline

Joined: May 2003
Posts: 1,137
kamloops BC Canada
then we extend the mast with EMT and change the meter hub to a threaded one [Linked Image]
Theres an Adapter to transition from the mast to EMT also.

#102669 - 07/26/06 12:56 PM Re: Meter heights and Masts  
mikesh  Offline
Joined: Jun 2006
Posts: 613
Victoria, BC, Canada
From appedix B 6-112 the mast definitions only state that there must be at least 3 supports. 1 at the roof line and 2 on the wall and capeable of supporting a 270 kg cantelever load. The maximim unguyed length above the roof is 1.5 meters. If the mast can support the side load with less than 4 feet below the roof then I think it is OK but maybe the mast cannot normally support such a load with such a large cantelever above the roof and the 4 foot thing arises from that.

#102670 - 07/27/06 12:56 AM Re: Meter heights and Masts  
u2slow  Offline
Joined: Sep 2003
Posts: 200
Salt Spring, BC, Canada
My inpsector pointed out I am lucky to have an intermediate pole at my property line (30' away). Otherwise the cantilever load of the triplex crossing my front street would be too great for the height of my mast. (Green garage door is only about 6'6" high).

[Linked Image]

[This message has been edited by u2slow (edited 07-27-2006).]

Member Spotlight
kamloops BC Canada
Posts: 1,137
Joined: May 2003
Show All Member Profiles 

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.015s Queries: 14 (0.003s) Memory: 0.7836 MB (Peak: 0.9349 MB) Zlib enabled. Server Time: 2017-03-29 09:17:33 UTC