On Saturday, November 19, 2016 at 9:23:09 AM UTC-6, wrote:
On Sat, 19 Nov 2016 02:33:47 -0800 (PST), Uncle Monster
wrote:

On Saturday, November 19, 2016 at 12:52:58 AM UTC-6, wrote:
On Sat, 19 Nov 2016 00:49:09 -0500, "Sherlock.Homes"
wrote:

Thanks! One side of the bridge tab seems a lot easier to bend out than the
other but if I muck it up I've got another.

Am I correct in assuming with a tandem breaker if one circuit pops, the
other is shut off even though it's still OK? Does a tandem breaker show
which circuit had the fault?

I'm beginning to see some advantages in bringing out the Sawzall and all the
rest of the tools it takes to add a new outlet to very old plaster-lathe
construction. double frown

SH

That is one advantage of using 2 single pole breakers, handle tied. If
you have one tripping you can remove the handle tie to isolate
although in most designs it will be apparent.
As I said before it is recommended in a box with multiple circuits but
not required as long as you are not sharing the neutral.

I like the Square D breakers for that because of the red indicator window.(?)?

[8~{} Uncle Square Monster

The problem is, with a tandem, there is only one flag so if you are
feeding two 120v circuits, you will not know which one tripped the
breaker.

I'm sorry, I thought you were discussing the use of 2 single pole breakers with a handle tie. What I've seen is that one side will trip and tug the handle of the other breaker and not trip it. It's been a while but I can swear I've seen a 20 tied to a 15 and if one side trips, you must flip both handles all the way off to reset whichever side tripped. (-_-)ゞ゛

https://www.grainger.com/product/SQU...ndle-Tie-5B734

http://www.homedepot.com/p/Square-D-...HTCP/100345836

[8~{} Uncle Tandem Monster