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In the US, the National Electrical Code (NEC) will allow you to install single phase and three phase systems in the same conduit.
The conductors of any three phase circuit must be run in the same conduit. If the circuit requires a neutral, it must also run with the conductors in the same conduit. (If they were to be run in more than one conduit or raceway, the circuit would not operate properly.)
Yes they can. If the feeders are of different sizes, then a conduit fill calculation must be made to ascertain that the conduit does not become overfilled. Cross sectional areas of the conductors are found and it is then determined what the conduit cross sectional fill will allow.
According to the wording ,2 different phase wires "can" run through the same conduit. Not only can they, but if they are part of the same circuit they must. And in cases where conductors are paralleled, meaning more than one conductor per phase as is common in commercial and industrial installations, you put one conductor of each phase and a neutral, if one exists, and a ground in each conduit. Not doing so, meaning to put all of one phase in one conduit, causes a voltage to be induced into the conduit and a tremendous amount of heat builds up. Even when using pvc or other non-metallic conduit, somewhere along the way you have something metallic and have the same problem. To simplify, you must put all conductors associated with the same circuit in the same conduit.
No, the conduit has to be supported individually from a supportive structure. The spacing of the strapping is related to the size of the conduit.
In the US, the National Electrical Code (NEC) will allow you to install single phase and three phase systems in the same conduit.
The conductors of any three phase circuit must be run in the same conduit. If the circuit requires a neutral, it must also run with the conductors in the same conduit. (If they were to be run in more than one conduit or raceway, the circuit would not operate properly.)
Yes they can. If the feeders are of different sizes, then a conduit fill calculation must be made to ascertain that the conduit does not become overfilled. Cross sectional areas of the conductors are found and it is then determined what the conduit cross sectional fill will allow.
No they are not all the same. Universal adapters come in many different voltages and work in different outlets.
NO! The National Electric Code requires a partitioned box when high and low voltages share the same box. Always avoid installing different voltages in the same box, it's a bad idea. <<>> A 277 volt switch has a different screw to box configuration that a 120 volt switch. This is also true for 347 volt switches. The switch is configured this way so that 120 volt switches can not be used on the wrong voltage inadvertently According to the 2008 NEC 300.3 C 1 says yes as long as all the conductors in the wiring enclosure have at least an equal insulation rating as that of the maximum circuit voltage applied.
No. The two run at completely different voltages.
According to the wording ,2 different phase wires "can" run through the same conduit. Not only can they, but if they are part of the same circuit they must. And in cases where conductors are paralleled, meaning more than one conductor per phase as is common in commercial and industrial installations, you put one conductor of each phase and a neutral, if one exists, and a ground in each conduit. Not doing so, meaning to put all of one phase in one conduit, causes a voltage to be induced into the conduit and a tremendous amount of heat builds up. Even when using pvc or other non-metallic conduit, somewhere along the way you have something metallic and have the same problem. To simplify, you must put all conductors associated with the same circuit in the same conduit.
No, the conduit has to be supported individually from a supportive structure. The spacing of the strapping is related to the size of the conduit.
Incorrectly calibrated meters.
Yes, 120 and 240 volts can be run in the same conduit.
They are not. They are connected differently, and the voltages and currents behave in different ways.
They are not. They are connected differently, and the voltages and currents behave in different ways.