Building electrical engineering construction quality acceptance specification GB50303-2002

1 General

1.0.1 In order to strengthen the quality management of construction projects, unify the acceptance of construction electrical construction quality, ensure the quality of the project, and develop this specification.

1.0.2 This specification is applicable to the acceptance of construction quality of electrical installations that meet the functional requirements of the intended use of the building. Applicable voltage levels are 10kV and below.

1.0.3 This specification shall be used in conjunction with the national standard “Uniform Standard for Construction Quality Acceptance” GB50300-2001 and the corresponding design specifications.

1.0.4 The requirements for construction quality acceptance of engineering technical documents and contract documents used in construction of electrical engineering construction shall not be lower than the provisions of this specification.

1.0.5 In addition to the implementation of this specification, the construction quality inspection of building electrical engineering shall comply with the relevant national standards and norms.

2 terms

2.0.1 wiring system
A combination of a cable (wire), multiple cables (wires) or busbars, and the components that hold them together. The wiring system also includes components that encapsulate the cable (wire) or busbar, if desired.

2.0.2 Electrical equipment electrical equipment
Any object that generates, converts, transmits, distributes, or uses electricity, such as motors, transformers, electrical appliances, measuring instruments, protective devices, wiring system equipment, electrical appliances.

2.0.3 Electrical equipment current-using equipment
A device that converts electrical energy into other forms of energy, such as light, heat, and mechanical energy.

2.0.4 Electrical installation
A combination of electrical devices that cooperate to achieve one or more specific objectives and characteristics.

2.0.5 electrical installation (device) electrical installation in building
A combination of electrical components, wiring systems, and electrical components of electrical equipment to achieve one or more specific objectives and characteristics. This combination meets the intended functional and safety requirements of the building and also meets the safety needs of those using the building.

2.0.6 conduit conduit
As part of a circular or non-circular wiring system used to protect wires or cables in electrical installations, the conduits are sufficiently sealed that the wires and cables can only be introduced from the longitudinal direction and not from the lateral direction.

2.0.7 Metal conduit metal conduit
A catheter made of a metallic material.

2.0.8 Insulated conduits The insulating conduit does not have any conductive parts (whether internal metal bushings or external metal mesh, metal coatings, etc.), and is made of insulating material.

2.0.9 Protective conductor (PE) Protective conductor (PE)
A conductor that is electrically connected to the following components to prevent the risk of electric shock:
- bare conductive parts;
- external conductive parts;
- the main ground terminal;
- grounding electrode (grounding device);
- The grounding point of the power supply or an artificial neutral contact.

2.0.10 Neutral Protective Conductor (PEN) PEN conductor
A grounding conductor that has both a neutral conductor and a protective conductor function.

2.0.11 Accessible accessible
(for wiring) can be removed or exposed without damaging the structure or decoration of the building, or not permanently encapsulated in the structure or decoration of the building.
(for equipment) because there are no locked doors, elevations, or other effective methods for protection, and the license is very close.

2.0.12 Landscape lighting
This type of project is usually used at night for lighting projects that characterize the building's styling, artistic features, functional features and surroundings.