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#86580 - 11/13/03 02:27 AM Old Style Service Main Disconnecting Means
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Called a "London Box" these main disconnects are still in use in the Boston area. I am looking for any information, or instructions on their use. I imagine that they were installed in the early 1900's per the NEC?

_________________________
Joe Tedesco, NEC Consultant

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#86581 - 11/13/03 09:07 AM Re: Old Style Service Main Disconnecting Means
SvenNYC Offline
Member

Registered: 08/19/02
Posts: 1685
Loc: New York City
Do new houses in Boston also use these, albeit with modern-day components?

It looks like a good idea if the house needs a drastic rewiring inside or for firemen to cut electricity to the building that's burning up.

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#86582 - 11/13/03 09:55 AM Re: Old Style Service Main Disconnecting Means
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Sven:

Most are removed and replaced with new equipment, and when a new building is supplied with a new electrical service lateral, they don't use this type of equipment anymore.

Many buildings here are remodeled, and the service "end box" is where these old wires usually land before the metering.

You can search on NSTAR the electric utility here and see what their rules state about these disconnects.
http://www.nstaronline.com/


I am looking for information on these "old mains" and will appreciate hearing from anyone who has more information on them.

I have more images and will post them here soon.
_________________________
Joe Tedesco, NEC Consultant

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#86583 - 11/13/03 02:11 PM Re: Old Style Service Main Disconnecting Means
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA


Located in Cambridge, MA. I believe that this is still in use for stores on Massachusetts avenue?
_________________________
Joe Tedesco, NEC Consultant

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#86584 - 11/13/03 06:09 PM Re: Old Style Service Main Disconnecting Means
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Interesting looking stuff here Joe!


Bill

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#86585 - 11/13/03 06:48 PM Re: Old Style Service Main Disconnecting Means
txsparky Offline
Member

Registered: 05/25/01
Posts: 578
Loc: Magnolia,.Texas U.S.A.
Hey!!! Is 110.12(C) violated when equipment is spray painted with graffiti?

Wow ,I find it hard to believe that this stuff is still in use, and without covers! Doesn't the inspectors in the area have any say so on this?
_________________________
Donnie

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#86586 - 11/29/03 07:14 PM Re: Old Style Service Main Disconnecting Means
sparked Offline
Member

Registered: 09/23/03
Posts: 101
Loc: Raleigh
Does that breaker in the top say Noark? As in Federal Pacific? I wonder how it lasted this long...

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