All building work requires electrical drawings, and the wiring must be detailed by an electrician on site.
The main components of electrical design
- Electrical planning.
- Load testing.
- A technical report describing the project.
- Specifications for materials to be used.
- Construction specifications.
- Approval of the project by the utility company.
- Reference budget.
Lighting circuits
Outlets must be fully defined and located. This is done by incorporating the circuit into the Ceiling slab, suspended ceiling, or wall sconces. Outlet circuits: outlets must be fully defined and positioned. For example, wall recesses have a Reference height of 40 cm from the floor surface and worktops have a reference height of 15 from the countertop surface.
Panel or load center
The circuit breaker must be installed and located in an accessible positioning in the kitchen, with a person who can switch it off quickly if necessary. We’re back with you to become experts in residential electrical installation projects. To this end, we will take an excursion into the literature, filled with interesting theories that broadly define Residential electrical installation projects. There, we will visualize the different types of parts and Electrical equipment that make up a project and delve deeper into the goals we pursue from an Educational perspective, taking into account the needs and interests of the participants.
Circuit-breakers
Used to protect circuits against overcurrents (currents in excess of rated values). Overcurrents Include overloads and short-circuits. An overload occurs when the rising current slightly exceeds. The rated current, e.g. when a motor is forced to supply more torque than the rated current. The Circuit withstands the overload until a certain time and is not damaged. If the overload stops before this time have elapsed, no protection is required.
Fuse connections
Fuses are another type of overcurrent protection in which the current flowing through a Conductor blows when it exceeds a certain value. Nowadays, fuses are supplied as cartridges which are placed in a suitable stand and must be replaced after fusing. They are usually equipped with a status indicator (with or without purging).The power control switch (ICP). The power control switch (P.C.B.) is a circuit breaker whose Instantaneous interrupting current conforms to Table I and is responsible for limiting the power.
The power agreed with the supplier
The user can consume the power agreed with the supplier. If different power supplies are contracted for day and night use, two ICPs must be installed. A control cable included in the Individual extension cable from the meter to the ICP (see section 5.3) allows switching between. The two ICPs depend on the time of day.
System sizing
To determine the size of the system in a building, the loads to be served must first be Determined. The total capacity of all electrical equipment and machinery connected to the System is the installed capacity. As it is often not known exactly what loads will be connected, it is necessary to estimate the installed capacity based on parameters such as floor area and room Type.
Sizing of the general protective box (GGB)
MCCBs are defined by the maximum power passing through them and the cross-sectional area Of the conductors connected to them; MCCBs cannot deliver more than 150 kW; if more than150 kW is required, two or more boxes must be installed, and none of them must deliver more Than 150 kW. The most commonly used standardized CHP boxes are 100, 160, and 250 A. Depending on power requirements, type of power supply, and standards of the Power Distribution Company, several models can be selected.
Electrodes
The earth electrode is a conductor buried underground and in full contact with the earth. The Electrodes must be corrosion-resistant and must be buried to a depth of at least 50 cm (NTE-IEP [Recommends a minimum depth of 80 cm).
