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About This Item
Full Description
This British Standard specifies requirements for cut-out assemblies up to 100 A rating, for power supply to buildings. Each cut-out assembly provides a means of terminating service cables, protection, a neutral facility and/or a means of earthing the supply, and anti-tamper protection. The primary purpose of the cut-out is to protect the service cable.
Cut-out assemblies are suitable for use on single-phase or three-phase low-voltage public electricity supply systems with a maximum voltage up to 440 V AC and at a frequency of 50 Hz, the neutral being effectively earthed. The provisions of the general rules dealt with in BS EN IEC 60947-1 are applicable to this standard when specifically called for.Document History
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BS 7657:2022
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Cut-out assemblies up to 100 A rating, for power supply to buildings. Specification- Most Recent
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BS 7657:2010
Specification for cut-out assemblies up to 100 A rating, for power supply to buildings- Historical Version
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BS 09/30181298 DC
BS 7657. Specification for cut-out assemblies up to 100 A rating, for power supply to buildings- Historical Version
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BS 7657:1993
Specification for fuses (cut-outs), ancillary terminal blocks and interconnecting units up to 100 A rating, for power supplies to buildings- Historical Version