OPINION AND ORDER On May 20, 2019, an electrical “arc-fault” occurred in one of the vertical cables that power 570 Lexington Avenue, a fifty-story building in Manhattan, causing significant property damage. Thereafter, Tower 570 Company LP (“Tower 570″), the limited partnership that owns the building, brought this suit against Affiliated FM Insurance Company (“AFM”) and Travelers Property Casualty Company of America (“Travelers”), its insurers, seeking coverage for its loss. In February 2021, Tower 570 and Travelers settled their claims, leaving only the coverage dispute between Tower 570 and AFM. Now pending are Tower 570′s motion, pursuant to Rule 56 of the Federal Rules of Civil Procedure, for partial summary judgment with respect to the existence of insurance coverage; AFM’s cross-motion for summary judgment; and three Daubert motions to exclude the testimony of expert witnesses. For the reasons that follow, AFM’s motion to exclude the testimony of Tower 570′s expert witness is GRANTED, Tower 570′s motion to exclude the testimony of AFM’s expert witnesses is DENIED; AFM’s motion for summary judgment is GRANTED in part and DENIED in part, and Tower 570′s motion for summary judgment is DENIED. BACKGROUND The relevant facts — drawn from the pleadings and admissible materials that the parties submitted in connection with these motions — are largely undisputed. On May 20, 2019, an electrical arc-fault occurred within one of the four riser cables, known in this litigation as “Riser 1,” that supplied electrical power to 570 Lexington Avenue in Manhattan. ECF No. 134 (“SOF”), at
61, 62, 81. An arc-fault occurs when the insulation on an electrical cable breaks down, causing a fault or a short. Id. 23. Under certain conditions, an arc-fault can result in an arc-flash, in which light and heat are produced, or an arc-blast, in which energy is released. Id. 24. An arc-flash or an arc-blast can be extremely destructive; “temperatures can reach or exceed 35,000°F at the arc flash point” and “[t]he energy released…is massive and will rapidly vaporize the metal conductors involved.” Id. 25. The arc-fault at 570 Lexington occurred within a vault located on the twenty-third floor of the building, one of three locations where the riser cables are “spliced.” Id. 62; see also ECF No. 125-16, at 2. The arc-fault led to an arc-flash and arc-blast, which caused damage to Riser 1; various other building components in the area, including the vault; and, potentially, the other three risers. See SOF
