Mechanical installation32Cable channel in the floor below the cabinetWhen a cable channel is constructed below the cabinet, ensure that cabinet weightlies on the sections which the floor carries.Fastening the cabinet to the floor and wallFasten the cabinet to the floor and wall/roof according to the panel builderísinstructions, e.g. with outside fastening brackets or by fastening holes inside thecabinet.Electric weldingIt is not recommended to fasten the cabinet by welding.If the preferred fastening methods (clamping or bolting through the holes inside thecabinet) cannot be used, proceed as follows:ï Connect the return conductor of the welding equipment to the cabinet frame atthe bottom within 0.5 metres of the welding point.WARNING! If the welding return wire is connected improperly, the welding circuitmay damage electronic circuits in the cabinet. Ensure that the welding fumes are notinhaled.Example cabinet frame viewed from aboveWith heavy cabinets,support the structuralC-sections from below.Example cabinet: side viewCablesPrevent the cooling air flow from the cable channel tothe cabinet by bottom plates. To ensure the degree ofprotection for the cabinet use the original bottom platesdelivered with the unit. With user-defined cable entriestake care of the degree of protection, fire protection andEMC compliance.
