2.from what I was told the two disconnects being on the same service pole was ok, maybe its because the feeds are going into trailers..:?
Two disconnects on the same service pole is not problem. If they are "service disconnects" for residential type "trailers" Art 550.32 would be important as kwired notes above.
3.single wide has one panel..double wide has two.(panels) There may be future expansion of loads (in the area) so the rating of the disconnect gives some flexibility
The single wire poses no problem but the fact that there are two panels on the double wide is a challenge since the NEC does not generally allow
two services or feeders to one structure. We often have manufactured buildings (Art 545) with panels in each section and a normal arrangement
would be a single exterior panel feeding each of the two interior panels.
4.From what I was, told feeder load calc are typically not done
In regard to "trailers" or manufactured buildings, at some point a load calculation was likely done to select the "main" for the unit. Feeders or service calculations for the conductors that supply that unit are normally selected based on the size of that "main" so additional calculations are not performed (The manufacturer selects a 200 amp panel, we supply it with a 200 amp feeder without questioning)
On your double wide, unless you want to match the sum of the two mains in the unit, you would need to calculate a load (for example if you now have two 200 amp main panels in the unit you can supply a 400 amp feeder to supply them or, if you calculate, the feeder could be smaller
I am new..so I dont know all the articles but just wanted to see anyones suggestion concerning
I also learned there is a general rule from most utility companies to size up devices to address fluctuations in the grid (whenever it happens) Dont know how true this is.
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