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Won't shutting down the power cause problems? #150311
02/08/05 09:06 AM
02/08/05 09:06 AM
Joe Tedesco  Offline OP
Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA
Question from a Home Inspector:

I know inspecting the electric panel requires removing the cover.

Shut down the main power first!

My question is...What if people are still living in the house at the time of the inspection. What about Computers, security alarms etc. Won't shutting down the power cause problems?

[Linked Image]

Joe Tedesco, NEC Consultant
Arc Flash PPE Clothing, LOTO & Insulated Tools
Re: Won't shutting down the power cause problems? #150312
02/08/05 02:29 PM
02/08/05 02:29 PM
rmiell  Offline
Joined: Nov 2000
Posts: 246
La Junta, Co. USA
A quick word to the tenants will let them know that the power will be off for a few minutes. If now one is home, it would be no different that a power company outage. Just turn it back on when complete.

Power outages can cause problems with electronics, but they can just shut them down beforehand.

Rick Miell

Re: Won't shutting down the power cause problems? #150313
02/15/05 10:22 AM
02/15/05 10:22 AM
Trumpy  Offline

Joined: Jul 2002
Posts: 8,261
SI,New Zealand
Good call Rick.
After all, it's not as though it's going to be off all day.
It's when people don't get told, that the feathers start to fly. [Linked Image]

Re: Won't shutting down the power cause problems? #150314
02/16/05 06:58 AM
02/16/05 06:58 AM
Trumpy  Offline

Joined: Jul 2002
Posts: 8,261
SI,New Zealand
Joe, Rick and others,
Who is to say what is behind that cover?.
Who knows how well the wires have been tightened in the Disconnect?, Line or Load side.
Or, as I have come across before today, the cover was holding the Pan unit in place.
There are just so many variables and with Short-Circuit Fault Currents getting higher and higher, the need to isolate Live Panels, while not actually working on them, just opening them up, is fraught with danger these days.
If it will melt metal, just think about what it will do to your exposed skin.
It's like an un-controllable Arc Welder.

Re: Won't shutting down the power cause problems? #150315
03/08/05 08:43 AM
03/08/05 08:43 AM
electure  Offline

Joined: Dec 2000
Posts: 4,280
Fullerton, CA USA
What happens if a Home Inspector shuts off the Main Breaker, does his thing, and then can't reset it?

Does he call an electrician and foot the bill himself?

Just curious.

Re: Won't shutting down the power cause problems? #150316
03/14/05 08:46 PM
03/14/05 08:46 PM
highkvoltage  Offline
Joined: Aug 2004
Posts: 34
Massillon, Ohio, USA
Why is some Home Inspector in a Panel? Most have no idea what they are looking for. A simple 8 hour class and a new notebook does not qualify them. They base their opinion on who hired them. If the seller hired them everythings OK, if the buyer hires them they will find a problem.

Re: Won't shutting down the power cause problems? #150317
11/21/05 03:18 AM
11/21/05 03:18 AM
Mash  Offline
Joined: Sep 2005
Posts: 51
South Australia
If you switch off equipment in the correct manner and it fails to restart that is the financial responsability or the said owner of that equipment as it is not fit for purpose or is faulty. Obviously it should be handled with some diplomacy and the equipment should not be left in a dangerous condition. Not shutting down the power may cause more problems to the inspector, but if he isnt qualified to open panels he shouldnt.

Re: Won't shutting down the power cause problems? #150318
11/21/05 08:07 AM
11/21/05 08:07 AM
resqcapt19  Offline
Joined: Nov 2000
Posts: 2,148
Just shutting down the main is not enough for complince with the rules in 70E. The line side would also have to be shut down before you remove the cover, unless you are in Canada. The panels in Canada have an additional metal cover over the line side terminations that is not part of the main cover.

Re: Won't shutting down the power cause problems? #150319
11/21/05 04:58 PM
11/21/05 04:58 PM
kyme  Offline
Joined: Sep 2003
Posts: 38
electure you have a good point. i was adding a circuit to a office bldg last year. i turned off the main, when i went back to reset it it would not reset. that is not a good feeling at 8pm. and of course it was an old style breaker that had to be ordered.

Re: Won't shutting down the power cause problems? #150320
11/21/05 08:01 PM
11/21/05 08:01 PM
BobH  Offline
Joined: Oct 2004
Posts: 135
Newfane, N.Y USA
I just got a call the other day from a woman who was troubleshooting her own electrical system in her house. She told me that when she went to remove the panel cover (to replace the breaker she thought was defective-it wasn't of course)that everything went dead in the house. I asked her if she was ok, but it turns out that she was just careless (in more ways than one) and bumped the main breaker while she was removing the cover. Oh my gosh!

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