Sizing 100 Amp 3 Phase 480 Service

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kwired said:
That likely depends on the supplier, manufacturers do make it.

Why is it much better?



Some have assumed no EGC because you said this is a service. You then said it is from a MCC bucket which indicates is is likely a branch circuit and not service conductors.
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it was based that #2 was on the plans since it was on the proposal!!! Since there are still so many unknowns.
 
Optimal1 said:
it was based that #2 was on the plans since it was on the proposal!!! Since there are still so many unknowns.
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That is just following specifications doesn't necessarily mean it is a good design or not. They could have specified running 500kcmil, and it could be good design but pretty expensive for no more then what is gained.
 
kwired said:
That is just following specifications doesn't necessarily mean it is a good design or not. They could have specified running 500kcmil, and it could be good design but pretty expensive for no more then what is gained.
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Well when you are talking about #3 to #2 that is really not something you make an issue of. now talking about 500kcmil, yes you would want to say something and bid it both ways so your customer understand the price difference. you would not be able to down size the wire unless you made a plan revision. so if it on the approved set of plans that is what needs to be followed regardless of a bad design. but make sure to tell the customer about it so you don't have egg on the face.
 
Optimal1 said:
You have a proposal for this job? if so you must have an approved set of plans?
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Optimal, welcome to the Mike Holt forum. :)

One thing you will find if you hang out on these forums is that things are done very differently across the country.

For instance when I was bidding work 99% of the time there were no plans at all yet I still had proposals.

For something like a 100 amp feed from an MCC to a motor all I would provide the inspection department for a permit was the size of the feeder (100 amps) and the value of the work.
 
iwire said:
Optimal, welcome to the Mike Holt forum. :)

One thing you will find if you hang out on these forums is that things are done very differently across the country.

For instance when I was bidding work 99% of the time there were no plans at all yet I still had proposals.

For something like a 100 amp feed from an MCC to a motor all I would provide the inspection department for a permit was the size of the feeder (100 amps) and the value of the work.
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Thank you, I am enjoying some of this. I am actually from up north and live in Florida now for the past 20 years and I have found out that things are very different. We work all over in the southeast parts of the US and everything is totally not the same anywhere. I was just going by the fact he said he was building a new service or adding a new sub panel.

Thank you for the help. :)
 
Daddy, tell me a fairy tale. Well, once upon a time there were three electricians looking at a job and they all agreed on the same way to do it.:roll:
 
iwire said:
Optimal, welcome to the Mike Holt forum. :)

One thing you will find if you hang out on these forums is that things are done very differently across the country.

For instance when I was bidding work 99% of the time there were no plans at all yet I still had proposals.

For something like a 100 amp feed from an MCC to a motor all I would provide the inspection department for a permit was the size of the feeder (100 amps) and the value of the work.
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Exactly what I do most of the time - there are no plans, except my plans, yet customers still want a price ahead of time. Hard to give a "well done" price when they will only see it as higher then everyone else that maybe decided to use aluminum instead of copper for that run, no plans review either so nothing is approved before construction.
 
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