2 circuts3 gang box

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e150club

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house wiring was not my forte but a friend showed me his new wiring . i saw a 3 gang boxw/ a duplex a toggle sw and a 3 way sw. and two feeds [same leg or 220 i did'nt ask] it seems to me code or not i would have put the duplex in a different local. is it legal?
 
Club,

Let's say I put 3 duplex receptacles in that 3-gang box. Assuming the box is spacious enough (enough in?) then I could bring six circuits, one to each receptacle, if I wanted to. The six circuits could be all on the same bus, multiwire or individual in any bus arrangement I see fit.
 
dumb question by me

dumb question by me

you know i thought it was no problem but why cram
the box with all those wires. i love the knowlage we can get from this site
 
404.8(B) Voltage Between Adjacent Devices A snap switch shall not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices, unless they are arranged so that the voltage between adjacent devices does not exceed 300 volts, or unless they are installed in enclosures equipped with identified, securely installed barriers between adjacent devices.
Barriers are required between switches that are ganged in a box and used to control 277-volt lighting on 480Y/277-volt systems where two or more phase conductors enter the box. Permanent barriers would be required between devices fed from two different phases of this system because the voltage between the phase conductors would be 480 volts, nominal, and would exceed the 300-volt limit. Barriers are required even if one device space is left empty because the two remaining devices fed from different phase conductors still would be adjacent to each other. This requirement now applies to switches ganged together with any wiring device where the voltage between adjacent conductors exceeds 300 volts.
 
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