Electrical substation design fundamentals apply in every electrical utility centers just as the main generator of power. In every substation, by and large, there are switching, protection as well as control equipment. This is without ruling out the transformers. In large substations, in order for electrical substation design fundamentals to apply, there must always be circuit breakers. These are used for the interruption of overloaded currents or short circuits as can be realized in the system.
In line of electricity, it has been noted with a lot of concern that many substations normally lack generators. However, this does not rule out the possibility of having a substation near any given power plant. In the substations hitherto, other devices like voltage regulators as well as capacitors should never miss as they have a role to play in as far as electricity is concerned. Summarily, electricity is very dangerous and therefore in places where the fence is metallic, it is important to ground them properly lest many lives are lost. These are only, but to mention a few.