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I'm trying to determine if this is an actual short or an intentional thing.

There are two fuses in my home's fusebox that both seem to control the same circuit. Only one of them can be on at a time. When we try to turn on both, the opposite fuse breaks. I've tested all of the related switches and plugs and can't find anywhere that the two circuits are wired together. I noticed this symbol on the label for circuit 20 but I have no idea what it means and a google search wasn't helpful.

Can any of you identify it?

Should both of these fuses be able to be turned on at the same time?


Fuse Box
 

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Electricians have symbols to indicate exactly how and elecrtrical circuit is used.
The O is our symbol for a light bulb
The vertical tally marks indicate exactly how many 10 amp or 1200 watt rated utilization outlets are on that circuit.

A trained electrical professional can tell at a quick glance that the circuit has one lighting outlet and two 1200 watt rated utilization outlets.

If these guys tell you something different it is only due to the above information being our secrete symbols to tell eachother about the circuit and not for the general public to use.

Kind of like the symbols hobos use to let others know about a specific place.


&&&

The Red Chinese.
 

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Symbol


I'm trying to determine if this is an actual short or an intentional thing.

There are two fuses in my home's fusebox that both seem to control the same circuit. Only one of them can be on at a time. When we try to turn on both, the opposite fuse breaks. I've tested all of the related switches and plugs and can't find anywhere that the two circuits are wired together. I noticed this symbol on the label for circuit 20 but I have no idea what it means and a google search wasn't helpful.

Can any of you identify it?

Should both of these fuses be able to be turned on at the same time?


Fuse Box
Seriously,
Those two circuits are producing a dead short.
You need to turn both of them off and call a licensed contractor to evaluate the problem.
Problems like this can directly cause a fire or electrocution death.
Don't try to change anything before calling someone out. You could unintentionally mask a serious problem.
Again. Turn both of those breakers and call a good solid licensed electrical contractor to have a look.
 

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