Adding electrical boxes

[MrBojangles]

I had done this about 30 years ago, and, IIRC, it was a series of boxes, Romex coming in, and Romex coming out, one in, one out, each box, except for the lady box had one in and that’s it.

My wife wants me to add another box to an existing outlet in the basement, except it’s not the last outlet in the series. Two Romex wires there, one going in, one going out.

Can I safely add a box to this existing box, so 3 Romex wires coming in, pigtail all three together, and then attach a single black wire to the gold side, a single white wire to the silver side, same with the green ground.

Do I need to enlarge the box, if this is even possible? How do I determine overload?

 

[littlespark]

one for @Megawatt i think..... but i dont see a problem from this side of the pond

2 things...

one, welcome to the forum
two. "Bo Jangles" was the name of a mobile disco that used to come around our school once a month (i know its also a song)

 

[MrBojangles]

Okay, so what is the limit if I can add to this box? Just one more, several more?

I’m not sure if adding a third Romex wire to two already coming in and going out meets code in the USA???

 

[SWDweller]

All valid questions. You have not provided the information need so an answer can be formulated