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tandom breaker #86704 11/23/03 08:56 AM
Joined: Mar 2003
Posts: 92
G
gserve Offline OP
Member
In a mobile home the other day I saw a tandem breaker (20A/30A)where the 20A outside Breakers that are connected by a handle tie were feeding 2 separate 120V circuits(not multiwire).I removed the handle tie so that if 1 circuit trips the other won't. Did I do the right thing? These breakers are designed for 2 separate 240V loads.

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Re: tandom breaker #86705 11/23/03 09:32 AM
Joined: Oct 2000
Posts: 3,961
Bill Addiss Offline
Member
gserve,

If the breaker says common trip they'll both trip with or without the handle.

This is from a Siemens Catalog showing 2 different types:

[Linked Image]

Personally, I don't think one of the outside breakers would trip the other unless they were common trip.

Bill


Bill
Re: tandom breaker #86706 11/24/03 08:09 AM
Joined: Mar 2003
Posts: 92
G
gserve Offline OP
Member
Bill, These are not common trip it says so on the breaker it is a Cutler-Hammer type BR breaker.

Re: tandom breaker #86707 11/24/03 11:07 AM
Joined: Oct 2000
Posts: 3,961
Bill Addiss Offline
Member
If the circuits are unrelated I don't see anything wrong with removing the handle.

Bill


Bill
Re: tandom breaker #86708 11/24/03 01:24 PM
Joined: Aug 2002
Posts: 1,081
T
ThinkGood Offline
Member
Bill:

Is the breaker designed such that the handle can be removed with out changing the UL listing (in other words, is the equipment being modified by removing the handle)?

Re: tandom breaker #86709 11/24/03 01:29 PM
Joined: Aug 2003
Posts: 1,374
R
Ryan_J Offline
Moderator
TG: I think that perhaps 110.3(B) has been violated, but I would never dream of red-tagging it. It is my understanding that breakers are required to be "atoumatic trip", meaning that they will open the circuit regardless of the handles position. With that in mind, I see no problem removing handle ties.

You do have a valid point, however.


Ryan Jackson,
Salt Lake City
Re: tandom breaker #86710 11/24/03 08:57 PM
Joined: Apr 2002
Posts: 7,211
HotLine1 Offline
Member
Ryan:
Yes, it may be a "technical" violation for removing the handle tie, and yes, I would not red-tag it either, unless the cb was installed in violation of the panel "label"

Basically this type of cb is 'used' to add additional circuit capacity to a panel, and if it's a 16 circuit panel, this baby wouldn't fly.

John


John
Re: tandom breaker #86711 11/25/03 10:22 PM
Joined: Jan 2003
Posts: 18
I
Inspector Grump Offline
Member
If you remove the handle the breaker is no longer "listed" and becomes a violation!

[This message has been edited by Inspector Grump (edited 11-25-2003).]

[This message has been edited by Inspector Grump (edited 11-26-2003).]


Larry

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