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Messages posted by: Joe Tedesco
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"He went in to a bathroom and saw ladies shoes under the door of the toilet and dropped his drawers, pulled off his shirt, and used the counter at a sink to pull himself above ceiling so he could watch below. He fell through the ceiling when he tried to move one of the tiles and lost his balance!"
This is a PDF file and covers detailed information about home Electrical Fires.
Mike Casey wrote:Joe:

So a tie is not required for MWBC in any case? Officials here are requiring them for all MWBC - not that this requirement means the code requires it....

Prior to the 2008 NEC handle ties or multi-pole CB's were not required for MWBC's.
Juan Jimenez wrote:Why don't I ever see the breakers for an MWBC tied. Even on new construction homes it's just not there.


The 2002 NEC permitted the use of a circuit breaker as a disconnect. For a multiwire branch circuit, unless limited by 210.4(B), individual single-pole circuit breakers, with or without “approved” handle ties, are permitted as the protection for each ungrounded conductor of multiwire branch circuits that serve only single-phase, line-to-neutral loads. A proposal for the 2005 NEC [ROP 10-39] was accepted to delete the word “approved” and replace it with the word “identified” because Article 100 defines “approved” as acceptable to the authority having jurisdiction. Some electrical inspectors have accepted nails, screws, or wires as an approved handle tie. Article 100 defines “identified” as “recognizable as suitable for the specific purpose, function, use, environment, application, and so forth, where described in a particular code requirement.” Accessories, such as handle ties, are readily available from product manufacturers.
Juan Jimenez wrote:What if there is one on the inside too?

It is required, along with an insulated bushing, and in some cases it will be required to be a bonding bushing.
Pete Campbell wrote:Most likely to be found in commercial work, right? Looks like GRC between the panels.

This can be found in a residential, commercial, or industrial Building. I found this in a Ramada Inn in South Carolina.
Thanks Mike: Here's a sample of Old Electrical Wiring, Part 1, the commentary will be added soon. http://youtu.be/PYTCApEAAxY Comments will be appreciated.
Here's the correct link to the video clip showing the History of the GFCI http://youtu.be/V7as0RNcsQY
Please explain MPHs?

This picture was taken from one of my EC&M articles years ago.
I saw Romex being used as well, this was taken in a hotel in the Northwest.
Thank you!
Thank you!
Thank you!
Learning what to inspect and how to determine if the equipment is safe must be done by those who have knowledge of the documents that are used. This includes the NEC there is no simple cheat sheet and it is probably better to attend a seminar that will cover the many rules that must be followed.
William Chandler wrote:Joe,
Do you have any inspection recommendations for HI's on pools?

Offer your services only to verify that the pool was properly installed and inspected by the local building department. Understanding the NEC Article 680 rules would require detailed knowledge of these types of installations. I wonder if there are any SOP's that cover all of the details for the proper electrical inspection of equipment covered by the scope of Article 680?
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