True: RNC can concealed on walls, Knob and tube is also known as open wiring method, Solid knobs are used to anchor wires as big as No.8 or bigger., Knob and tube has economical when properly installed., FNMC is also known as LFNC., FNMC is being installed in lengths longer 1,800 mm., RNC can be buried under the ground 300 mm in thick concrete equivalent., RNC can be used in areas where there in corrosive influences and chemicals, RNC can concealed in floors, walls and ceiling., RNC can be buried under the ground 460 mm in airports and runways, False: You can use knob and tube wiring on theaters, It is permitted to use FNMC even if it is more than 1,800 mm, Split knobs are used to anchor wires as big as No.8 or bigger., RNC are used in temporary installation such as construction jobs., FNMC can contained 900 volts nominal, RNC can be buried under the ground 640 mm in streets, highways roads,alleys driveway and parking lots,, FNMC can be used in cold places., FNMC is a non-metallic unthreaded smooth walled tubing, Knob and tube wiring can be used in commercial garage, theaters and hazardous location., RNC can be used in theathers.,

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