ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
VDE 0100 to introduce AFCIs
by sparky. 01/19/18 08:03 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
FPE in Germany
by HotLine1. 01/17/18 07:07 PM
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 16 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
HVAC contractor saw electricity! #113366
05/06/02 07:42 AM
05/06/02 07:42 AM
Admin  Offline
OP
Administrator
Member
Joined: Oct 2000
Posts: 3,481
NY, USA
[Linked Image]
Quote
Got a call from a HVAC contractor who had no lug under which to ground his new equipment feeder. My faith in contractors doing a quality job was partially restored in the fact that he did not just leave it hanging. I temporaried the ground in to the gec before I took the picture. All of this work has been done by licensed contractors. Starting with the grounding electrode conductor run in unbonded EMT which was standard pratice in this area for period in which it was installed. At some later date there was an addition to the house at which time some ten to twelve 20amp 120 volt circuits were landed in this panel. The breaker in the 1 and 3 slots is a 40amp 2 pole which has 4 of these circuits landed on it. Many similar connections are obvious. The ground fault is not connected to the receptical in the wiremold box attached to the bottom of the panel. The last addition was a generator that is required for life sustaining medical equipment. The generator is connected via a 30 amp twist lock plug connected to 12/4so cable run to the transfer switch the load is connected via a 100amp breaker. The ground from this connection is under the lug that is missing the screw. You can almost smell the smoke!! Homeowner agrees they need to upgrade but funds are limited because of the new heatpump. What would you do in this situation? A 125amp 24cir panel with breakers mounted beside the meter panel which also has missing dead front cover. On second thought the HVAC contractor may have only called me because he saw electricity when he was installing his breaker. You know the blue flame usually followed by oh-$*%# . The kicker is that the 100amp load connected to the generator is a Federal Pacific panel inside the house, in a clothes closet. I will admit I am going to have to find out just how this transfer switch works before I touch this, as I don't see how it disconnects the poco connection.

Just another day at the office,
Watthead

Tools for Electricians:
Re: HVAC contractor saw electricity! #113367
05/06/02 11:48 AM
05/06/02 11:48 AM
W
wirewiz  Offline
Member
Joined: Jan 2002
Posts: 122
WA.
I work with a few HVAC contractors very close, Shouldn't they should have told the home owner to consult a Electrical Contractor first to see if the service could handle the new load. Just my opinion, What's yours?
Wirewiz

Re: HVAC contractor saw electricity! #113368
05/06/02 07:36 PM
05/06/02 07:36 PM
C
CTwireman  Offline
Member
Joined: Feb 2002
Posts: 840
Connecticut, USA
One word: UGLY!!!!!

Yup, its time for a new service.

Is this California or Nevada by any chance? Just guessing, seeing as how that's an all-in-one.


Peter
Re: HVAC contractor saw electricity! #113369
05/06/02 07:38 PM
05/06/02 07:38 PM
C
CTwireman  Offline
Member
Joined: Feb 2002
Posts: 840
Connecticut, USA
One word: UGLY!!!!!

Yup, its time for a new service.

Is this California or Nevada by any chance? Just guessing, seeing as how that's an all-in-one.


Peter

Featured:

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

 

Member Spotlight
HCE727
HCE727
Delaware County, PA, USA
Posts: 186
Joined: November 2005
Show All Member Profiles 
Top Posters(30 Days)
Admin 20
sparky 15
Potseal 15
Popular Topics(Views)
243,566 Are you busy
180,366 Re: Forum
170,844 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.012s Queries: 14 (0.003s) Memory: 0.9592 MB (Peak: 1.0905 MB) Zlib enabled. Server Time: 2018-01-20 21:03:29 UTC