Place any fans or blowers close to the heat generating devices.
If using a fan, make sure that outside air is not brought into the enclosure unless a fabric or other reliable filter is used.
This filtration prevents conductive particles and other harmful contaminants from entering the enclosure.
Do not select a location near equipment that generates excessive electromagnetic interference (EMI) or radio frequency interface (RFI).
Examples of these types of equipment are: high power welding machines; induction heating equipment;and large motor starters.
system.
The proper location of incoming line devices keeps power wire runs as short as possible and minimizes electrical noise transmitted to the unit.
Avoid circuit overloading of the supply circuit
System Power
Proper grounding is essential to all safe electrical installations.
Refer to the relevant Federal, State/Provincial, and local electric codes, which provide data
such as the size and types of conductors, color codes and connections necessary for safe grounding of electrical components.
The code specifies that a grounding path must be permanent (no solder), continuous, and able to safely conduct the ground-fault current in the system with minimal impedance (minimum wire required is #18 AWG, 1 mm).
Separate ground wires (P.E. or Protective Earth) from power wires at the point of entry to the enclosure.
To minimize the ground wire length within the enclosure,locate the ground reference point near the point of entry for the plant power supply.
All electrical racks or chassis and machine elements should be Earth Grounded in installations where high levels of electrical noise can be expected.
The rack/chassis should be grounded with a ground rod or attached to nearby Earth structure such as a steel support beam.
Each different apparatus should be connected to a single Earth Ground point in a “star” configuration with low impedance cable.
Scrape away paint and other nonconductive material from the area where a chassis makes contact with the enclosure.
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