On Site Survey Techniques For Lighting Electrical Ready Boards Before Installation
As the connection hub between the power system and lighting loads, the installation quality of the lighting electrical ready board directly affects electrical safety and equipment lifespan. On site survey needs to start from three aspects: environmental adaptability, installation feasibility, and load matching. The following are specific techniques:
1、 Environmental condition verification
Temperature, humidity and protection level
In damp environments such as kitchens and bathrooms, electrical ready boards with a protection level of IP44 or higher should be selected to prevent water vapor from entering.
Industrial plants or high-temperature areas (such as boiler rooms) need to confirm that the ambient temperature does not exceed the rated working temperature of the electrical ready board (usually -5 ℃~+40 ℃).
Space and ventilation
The installation position of the electrical ready board should reserve at least 50cm of operating space to avoid crossing with water and gas pipelines.
Ventilation devices need to be installed in enclosed spaces (such as basements) to prevent internal components from overheating.
2、 Confirmation of installation conditions
Load bearing and fixing
The wall should be a solid brick wall or concrete structure, and hollow brick walls should be reinforced with steel backboards.
When installing on the ground, it is necessary to confirm that the ground flatness is ≤ 3mm/m to avoid tilting the electrical ready board.
Cable access path
Measure the cable length from the electrical ready board to the higher-level power supply (such as the meter box), leaving a margin of 15% to 20%.
Check if there are any right angle bends (≤ 2) in the cable conduit path to avoid difficulties in cable laying.
3、 Load matching and reservation
Circuit planning
Calculate the total current based on the lighting load power (e.g. 10 100W lamps, total current ≈ 4.5A), and select the rated current of the circuit breaker to be ≥ 6A.
Reserve 20% to 30% of spare circuits for future equipment expansion.
Grounding and lightning protection
Confirm that the grounding resistance of the electrical ready board is ≤ 4 Ω, and the metal casing must be reliably grounded.
When installing outdoors, it is necessary to install a surge protector (SPD) to prevent lightning damage to the equipment.
Summary: Through systematic surveying, 90% of installation hazards (such as cable overload and insufficient protection) can be avoided. It is recommended to use tools such as laser rangefinders and infrared thermal imagers to improve accuracy and ensure the safe and efficient operation of the electrical ready board.