Load analysis - opinions needed

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Smart $ said:
You have to state it accurately to understand:

Perfecting involves speculation, iterations of hypothesis, trial and error.

Perfection is hoped to be the end result of the process. When and if that result occurs, there should be no speculation. If there is speculation at that stage or thereafter, the achievement of perfection is rendered null and void in one form or another.
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True... true...
 
iwire said:
I have no way to back this up it is just my own thinking.

Considering manufacturers still use fuses in parallel inside of equipment I propose there is zero inherent danger in using fuses in parallel.

My guess as to why the NEC prohibits it is simply because in most cases that would mean two separate disconnecting means would be supplying a circuit. This to me could be a safety issue.

In your case you have a single disconnecting means specifically designed to supply a pair of fuses per phase. If you open the disconnecting means all power to the load and fuses is killed.
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I agree and that's what I'm recommending to the customer. We'll see if he goes for it.
 
Cow said:
"But, why do I have to change it now? It's been that way for years and we haven't had any problems."
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Actually, this guy is on the ball and wants me in there ASAP to get this done. He bought the buildings with whatever situation existed, but that doesn't mean he wants to keep it that way, especially if it could affect the liability decision of an insurance company. This customer's a keeper.
 
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