Legal question.

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AC\DC

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Florence,Oregon,Lane
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EC
So this is in regard to a previous post about rotary phase converter for some 3/0 cnc machines.

Inspector approved of another feeder to same building serving the phase convert. Since it’s will be for 3phase loads.

That’s complaint since it’s a different voltage.

Though issue I see. If I put the disconnect on the wall I want.
Then one service disconnect would be on wall and the original disconnect would be 20 feet ways on opposite wall.

Inspector did not like that original service disconnect in so far in the building. It’s legal but he likes to make up his own rules.
I called to see what his distance on grouping is. Since both disconnects would be in same room but on directly opposite walls 20 feet as the crow flys.

He avoided answering my question.
Instead he said he fine with the meter outside two now turn into a meter main.
This would make my old feeder non complaint since it is only three wire, and was built after 2008. He said it’s still safer than unfused service conductor that currently are in garage.( they are under concrete so I don’t see his problem).

So since the stipulation for 3wire to building was not prior to 08. Can inspector make his own changes even though it’s black and white???

ABJ has final say on rules that are vague but can he do what he is proposing.

Going to try and pull egc if I can but my be directly buried.
Was going to right in contract but hat Inspetor is allowing this set up??? Any thoughts.

No metallic from service to building. Safety issue is not an issue.
 
You got this in writing or in oral discussion? If in writing then I wouldn't worry if just told on the phone ask him to email you. He probably won't want to then and will have either you passed or not. The distance thing for grouped is silly when not state wide defined. Maybe it's time to ask for oregon to say a distance that counts as grouped.
 
The grouping I was going to argue. It’s a 20x30 shop and they would each be on opposite wall in-line on the 20xsection.
I look at like a large Mc room and we had disconnects opposite of each other all the time
 
Is this second feed same voltage/number phases as the first one? My understanding is you are supplying a phase converter with it so my guess is it is same characteristics as far as incoming feeder goes?

If it were different characteristics NEC specifically allows the second feeder. I don't think NEC requires grouping of those separate entries either. It does require grouping of the one to six disconnects allowed per entry though. So you could have six disconnects grouped from feeder 1 and six disconnects grouped at different location from feeder 2. Some signage indicating where all the disconnecting means are located is required though.

If the phase converter were located outdoors or at least in another building, then you more truly have two systems of different characteristics supplying the building.

JMO.
 
This is a resi home with large attached garage, were the work is being performed.
Correct on both incoming lines having same voltage characteristics.
225.30 e
Does say “ or different uses”
It’s solely for his phase conveter so is for different use
 
I would not buy having 2 feeders with the same characteristic as meeting 225.30(E) just because they feed separate equipment.
If that were the case 225.30 might as well be deleted entirely. Anytime you have multiple supplies they are going for other uses. The intent of 225.30(E) is to allow separate lighting or control branch circuits.
 
curt swartz said:
I would not buy having 2 feeders with the same characteristic as meeting 225.30(E) just because they feed separate equipment.
If that were the case 225.30 might as well be deleted entirely. Anytime you have multiple supplies they are going for other uses. The intent of 225.30(E) is to allow separate lighting or control branch circuits.
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In particular if they come from same source. Otherwise if it would be larger gear than POCO can/will supply that may be the allowance here, though that getting more involved with service than feeders but kind of would presume there likely still would be two services (at other location(s)) if this were the case.
 
kwired said:
In particular if they come from same source. Otherwise if it would be larger gear than POCO can/will supply that may be the allowance here, though that getting more involved with service than feeders but kind of would presume there likely still would be two services (at other location(s)) if this were the case.
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Yes, there are allowances if the capacity required exceeds 2000 amps.

In this case if the phase converter was located at the supply building or somewhere between the supply building and the other building then the different characteristics option could apply.
 
Read 225.30
Says different,voltage,frequency,or base, OR for different uses such as controle of lighting from multiple locations.
Different uses has no direct definition it’s vague. Lighting is just an example, I would say a feeder sized for a phase conveter for three phase equip meets different uses.
 
AC\DC said:
Read 225.30
Says different,voltage,frequency,or base, OR for different uses such as controle of lighting from multiple locations.
Different uses has no direct definition it’s vague. Lighting is just an example, I would say a feeder sized for a phase conveter for three phase equip meets different uses.
Click to expand...
If you were installing separate single phase feeders and three phase feeders they the exception could be used. Installing 2 feeders with the same characteristics then converting one to to 3 phase after you are in the building doesn't count. There is no reason 1 larger single phase feeder can't be installed for everything in the building.
 
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