Household distribution box is also commonly known as lighting box or strong electric box, Distribution Box he belongs to the end of the household electricity protection device, into the terminal connected to the outlet side of the meter, the outlet side to connect our home electrical. It is to protect the safety of our last security. Distribution Box Common models for the PZ-30-type lighting box.
PZ-30 series distribution box rated current 100A generally by the leakage protector, Distribution Box disconnector, fuse, high-segment type small circuit breaker (also known as micro-off) and other components in accordance with the terminal electrical device. It has anti-shock, anti-short circuit, Distribution Box anti-overload, anti-leakage and other protection devices. In the choice of home distribution box type must first understand two things:
A: The size of the meter off the end of the micro-cut, usually 63 An. As the home distribution box is linked to the meter box outlet side, so we choose PZ-30 when his total road control does not exceed 63
2: Calculate the use of household appliances through the current, reasonable distribution of branch circuit control circuit current. Usually we use home lighting with 2.5 square lead with 16A micro-off due to air conditioning and water heater power is relatively large selection of 20A to 25A micro-break and 4 square wire!
The main role of household distribution box The role of household distribution box is to cut off and connect the power, the effective control of each of the electricity lines, Distribution Box to achieve the purpose of safe use of electricity. Household use for the indoor control distribution box, its structure is generally composed of leakage switchgear and metering equipment.
Home power distribution box working principle power main gate - "leakage protector -" fuse these three units are linked in sequence, the 220V of the electricity received to the distribution box on the main gate above, and then the electricity through the distribution Box of the power of the main gate, into the leakage protector, Distribution Box and then the last through the leakage protection device into the fuse, Distribution Box through the fuse separation of two power output.
The installation location of the distribution box should avoid direct sunlight, avoid splashing water, avoid moisture, and have plenty of operating space in front. Distribution Box Should regularly check the equipment inside the cabinet, check the terminal, check the switch, contactor is good, there is no overheating inside, should regularly check the distribution cabinet sealing performance, to prevent small animals into or internal condensation. For large areas of moisture also equipped with flooders, dryers and so on. Distribution Box Should check the installation position is firm, not skewed
1) cabinet (disk) body appearance inspection should be no damage and deformation, Distribution Box paint completely intact. Cabinet (disk) internal inspection: electrical equipment and components, Distribution Box insulated porcelain pieces complete, no damage, cracks and other defects.
2) Before installation, Distribution Box check whether the distribution box number matches the installation position. Distribution Box Check the box number and the internal circuit number according to the design drawings. Box door grounding should be used soft copper braided wire, special terminal. Distribution Box The wiring inside the box should be neat, to meet the design requirements and acceptance criteria (GB50303-2002) requirements.