For a master electrician and his two assistants, working at a large food warehouse proved to present continuous challenges. Although the uninterruptible power supply (UPS) used to provide power to the communication antennas had been giving them problems for about a year, most of the time these incidents were of little consequence. The team typically corrected problems by simply cleaning a bad contact here and there. But on this particular day, something much more serious was brewing. The ...

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