Temporary oversizing of overcurrent protection devices can prevent huge production losses. For that reason, there can be great pressure to temporarily substitute an oversized fuse so equipment can run.
How can you avoid problems with this? First, contact your facility's insurer to see if such a thing is allowed under their policy and what conditions must be met. If they say it's not allowed under any conditions, then nobody at your company can force you to do it without direct orders from top management.
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