how can i know the capacity of electrical junction box?

Answer 1

I just went outside and looked at my junction box. There was nothing on the outside. But inside is a manufacturers specification and it says it is rated for a maximum 200Amps. So maybe you can find your answer printed on the box somewhere.

Answer 2

Well what voltage what amperage you using and what are you going to do with it. Way too many variables to guess. Do you have an existing service that you want to know what the load is or what? Will this be a new service and you want to know how big a junction box you need and are you sure you need a junction box. I like to run circuits for each service myself.

Answer 3

by "capacity" you mean what?

The box is basically there just to make sure nothing moves around and/or falls on the wires. If it fits without to much bending, the box is fine. Ground as necessary.

Answer 4

I WOULD LIKE TO HELP YOU BUT, THIS question is kind of cunfusing, can you ELABORATE MORE.PLSE.
eletrical boxes . you need to be more specific, i would hate to say something, and them you make a mistake, so i rather drink JUMAICAN RUM, SO nothing personal.

Answer 5

you need the dimensions of the box and conductor size. reference the n.e.c. code book and there is a table that will give you maximum # of conductors for your box size.

Answer 6

You need to be a little more specific with the question