The electrical installation in a home begins at the electricity meter, which measures energy consumption. Individual power lines run from the meter to the control and distribution panel, which contains devices like the power control switch, automatic main switch, residual current device, and miniature circuit breakers to regulate circuits and protect against overloads. The number of circuits depends on the home's size and electrical needs, ranging from basic installations sufficient for common devices to higher-level installations supporting electric heating or air conditioning. Common circuits found in homes include single-point lighting, multi-point lighting, and grounded or ungrounded outlets.

1. HOME ELECTRICAL INSTALLATIONS
● The electrical installation begins at electricity
counters room.
● The counters are devices placed by companies
that provides electricity to measure the electric
energy consumption.

2. HOME ELECTRICAL INSTALLATIONS

3. HOME ELECTRICAL INSTALLATIONS
● Individual derivation line get inside each
apartment through control and distribution
panel.

4. HOME ELECTRICAL INSTALLATIONS
● Elements of control and distribution panel are:
● PCS (ICP): Power Control Switch, controls that
consumed power not exceeds the maximum
contracted power by user. It is sealed by provider
company.
● AMS (IGA): Automatic Main Switch, protects an
installation against high intensities and shortcuts.

5. HOME ELECTRICAL INSTALLATIONS
● RCD (ID): Residual Current Device, is a security
switch that disconnects all the home installation
when there is any earth fault.

6. HOME ELECTRICAL INSTALLATIONS
● MCB (PIA): Miniature Circuit Breaker, exists one by
each internal circuit, protects each circuit against
overloads and shortcuts. It allows disconnect zones
individually.
● The number of MCBs in the control and distribution
panel depends on the metering type (with or without
time discrimination) and the electrification level of
the home.

7. HOME ELECTRICAL INSTALLATIONS
● Electrification level at home can be basic or
high.
● Basic level:
– Homes with less than
160 m2
of surface or
contracted power below
9200W.
– It must allow the use ofIt must allow the use of
common electrical devicescommon electrical devices
at home.at home.

8. HOME ELECTRICAL INSTALLATIONS
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9. HOME ELECTRICAL INSTALLATIONS
● High level:
– Homes with more than
160 m2
of surface or
contracted power over
9200W.
– Homes with installation of
electrical heating,
air conditioning or driyer.

10. HOME ELECTRICAL INSTALLATIONS
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11. HOME ELECTRICAL INSTALLATIONS
● Most common electric circuits at home are:
● Single point light: lamp or lamps that can be turn on
with a single switch.
● Commuted point light: lamp or lamps that can be
turn on from two or more points.
● Grounded or ungrounded electrical outlets.

12. HOME ELECTRICAL INSTALLATIONS
● Single point light:

13. HOME ELECTRICAL INSTALLATIONS
● Commuted point light:

14. HOME ELECTRICAL INSTALLATIONS
● Grounded or ungrounded electrical outlets: