Electrical assistance please! :)

yankshow

Member
You could put the area outside on one of the main lugs with the 40 amp inside and have both 20 amp for your grow room.
 

big happy

Member
take the line side " thats the main power going into your sub panel " trace it back to your main disconnect or breaker and shut it off . make sure there is no power going into your sub panel . now go buy which ever size sub panel you want . make sure you put the "legs" your line side back in the correct spots now you have as many new circuits you want
 

wtfh4xx

Active Member
Hey guys, can you help me out with this?
Igot the cable wired to the right 20Amp breaker and run along the rafters to the junction box.
It seems that there is only two wires going to the outlet that I want to make into a new circuit.
Which wires go to which?



 

Roland

Active Member
hmmmm ... more info needed .... it appears .. that u have ... 2 hots and a neutral .. coming from source and 2 hots and a neutral going out to another

device or receptacle .. 2 hots and a neutral could be a 240 or .. 2 - 120 V circuits the pipes that have one hot and one neutral are 110/120 V circuits .. the

grey romex u have in 2nd pic has a ground wire which needs to be attached to your box by a ground screw ..or ground clip .. (your existing wiring is grounded

thru the pipe (EMT) ) btw that grey Romex is made for underground installation and can be buried and is also VERY hard to strip.

if you are gonna use the grey wire for your new circuit ... u need to figur out where the other wires go and determine if they are used for 240 or 120 circuits ...

and determine the load on those circuits..

if you are not overloading the circuits ... then you can splice the white to the white wires and the black to the hot .. either black or red .. (depending on existing load ).... don't put too many wires under one wire nut .. also the box is getting crowded .. codes cover the maximum number of wires allowed in one box ... you can get an extension that will allow for more wires... you can get bigger wire nuts that allow for more wires under one wire nut ...

good luck
 

wtfh4xx

Active Member
THanks, its a 120volt circuit.

Basically what I want to do is seperate the outlet to the right of the picture (which has the black and white wire coming out) on its own circuit from the grey romex.
Then Ill also be running another outlet down from the romex circuit.

What Im doing is making it so I have two seperate 20amp 120volt circuits in one room.
So I ran the romex along the rafters to this junction box from the subpanel.


So what your saying is to connect teh black and white wires from the right to the romex.
What do I do with the ground wire coming out of the romex?
Can I hook it through that little hole in the junction box to suffice as ground?
 

Roland

Active Member
that will NOT give you a proper ground .... it needs .. A ground screw ( there is a hole in the box made for a ground screw) ... ( the grd scew hole is the smaller hole in the back of the box ..behind the black wire ... ground screw by code .. needs to be green ) .. or a ground clip .... u can get a ground clip at electrical supply or home depot ... or you can drill and tap a hole for the ground screw

the only way to get a SEPARATE 20 amp circuit is to go back to source and add a twenty amp breaker and a new set of wires

ok so the grey romex is going back to panel ? and the lower right pipe is going to be a new individual circuit ? then as long as the original "source " is from the same source as your grey Romex .. then u should be OK ... personally I would do it different ... you can pull more wires thru the pipe back to source and then splice to the circuit you want
 
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