State system for ensuring the uniformity of measurements. Standard reference data. Carbon monoxide, liquid and gaseous. Density, enthalpy, entropy, isochoric and isobaric heat capacities at temperatures from 70 K up to 500 K and pressures up to 100 Mpa
Low-voltage electrical installations. Part 5-54. Selection and erection of electrical equipment. Earthing arrangements, protective conductors and protective bonding conductors