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NFPA 850 "Outdoor Oil-Insulated Transformer Separation"

Question asked by rhedluc on Mar 2, 2020
Latest reply on Mar 9, 2020 by faizal_sharin

Referring this clause
"NFPA 850 5.1.4.3* Unless consideration of the factors in 5.1.4.2 indicates otherwise, it is recommended that any oil-insulated transformer containing 500 gal (1893 L) or more of oil be separated from adjacent structures by a 2-hour–rated firewall or by spatial separation in accordance with Table 5.1.4.3. Where a firewall is provided between structures and a transformer, it should extend vertically and horizontally as indicated in Figure 5.1.4.3."

Is this applicable also between Emergency Diesel Generator/equipment and Transformers?
Since as mention in the clause "between structures and a transformer" only.

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