We’re surrounded by electrically powered devices these days. From our lights, to our kettles, and of course our phones! Electricity flows through copper or aluminium wire to power or charge all of ...

Key learning points Electrical charges What are free electrons? Cell polarity Conventional current direction Electrons orbit the nucleus. An atom has a neutral charge, because it contains the same ...

Article 310 contains the general requirements for conductors, such as insulation markings, ampacity ratings, and conditions of use. It doesn’t apply to conductors ...

Article 310 contains the general requirements for conductors, such as their insulation markings, ampacity ratings, and conditions of use. It does not apply to ...