 
 <prompt> Electromagnetic radiation na wahala with im use? Given di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```But di mata be say, some railway operators dey show interest for di use of DC for higher voltages pass wetin dem bin dey use before. For di same voltage, DC dey get less loss pass AC, and na why high-voltage direct current don dey use for some bulk power transmission lines. DC no get di electromagnetic radiation wey dey come with AC, and for railway, e dey reduce interference with signalling and communications and e dey reduce di risk of EMF wey dey only exist for theory. DC also no get di power factor wahala wey AC get. Wetin dey interest railway operators pass be say DC fit supply constant power with just one ungrounded wire. For AC to supply constant power, e need three-phase transmission with at least two ungrounded wires. Another important thing be say, mains-frequency 3-phase AC need to dey carefully planned to avoid unbalanced phase loads. Some parts of di system dey get supply from different phases based on di assumption say di total loads of di 3 phases go balance. For di phase break points between regions wey get supply from different phases, long insulated supply breaks dey needed to avoid dem from shorting out by rolling stock wey dey use more than one pantograph at di same time. Some railroads don try 3-phase but di plenty complexity wey e get don make single-phase to dey di standard practice even though e dey cause interruption for power flow wey dey happen twice every cycle. An experimental 6 kV DC railway bin dey built for Soviet Union.``` 