Joe, Is this inside of a Sub Panel, or is that Zinsco 20/20 inside of something else [maybe a "Spiderbox"], used to protect that 20 amp Receptacle???
Either way, one can only ponder "Whadda Heck Was That Joker Thinking!?!?!"
Imagine someone sticking their finger in there to throw the Breakers' Handle[s]! That was sure nice of the Installer to leave "Access" on the side of the Receptacle with the Ungrounded Conductors' Terminations! [pending the Receptacle is wired correctly ] Need to include a little bit of risk with all installations
Keep those Popsicle Sticks, Maynard - We will need them to turn on/off the breakers
Scott " 35 " Thompson Just Say NO To Green Eggs And Ham!
#102948 - 12/02/0101:09 AMRe: What is this all about?
Those are old Zinsco or GTE/Sylvania twin CBs. I've even seen these with a stab connection for the wire similar to a stab-in receptacle. Also heard (maybe true, maybe not) that these are right behind FPE's for the "no blow" characteristics. Fortunately, they're long discontinued.
#102953 - 03/08/0207:29 PMRe: What is this all about?