Anode
Member
- Location
- Washington, USA
Here is a web link to a picture of my equipment as of right now. The upload attachment feature kept down sampling my picture...
http://s3.postimg.org/mgcjrg6wz/Equipment_Riser.png
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First question: The two 3" EMT conduits coming down into the electrical room have 32 #10 PV Wire Conductors & #6 Ground, total of 33 conductors. Is there a minimum size requirement for the pull box they go into? I've read through 314.28 and it seems as if since my conductors are no bigger than #4, then there is no requirement other than 20% fill for the wireway.. Is that right?
Second question: 404.8 Gives me 6' 7" to my disconnect switches on the stacked inverters (there's never enough room in electrical rooms... especially for the solar guys), my question is if there is a minimum requirement for the two that are closer to the concrete floor? The switches on those two inverters would be roughly 20 -24".
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A few side questions if you want to tackle them..
Any suggestions on the conduit runs or enclosures from the rendering please fire away. The knock-outs for the inverters made it a real head-scratcher with how to fit all the conduits nicely in that space... It seems as if the type T fittings (1.25") are going to work perfectly with a close nipple to hit the dc knock-outs. Then some pipe easy pipe bends on the 3/4 EMT ac run to the combiner panel.
I think I will add another ac knife blade disconnect under the auxiliary production meter, this will be in addition to the one that is required by the utility on the exterior. Sound like a good idea?
No plan yet for communications, but the dotted rectangle indicates where the enclosure for that may live. On from there I don't know the path yet... May do egauge or something in that enclosure and ct's for the combiner, or bite the bullet and implement the Solrenview into each of the 4 28kW Solectria Inverters..
Image uploading... I kept my image under the kb size, and within the pixel size, and couldn't get the board NOT to down sample it... No sure what I was doing wrong there, do you?
http://s3.postimg.org/mgcjrg6wz/Equipment_Riser.png
--
First question: The two 3" EMT conduits coming down into the electrical room have 32 #10 PV Wire Conductors & #6 Ground, total of 33 conductors. Is there a minimum size requirement for the pull box they go into? I've read through 314.28 and it seems as if since my conductors are no bigger than #4, then there is no requirement other than 20% fill for the wireway.. Is that right?
Second question: 404.8 Gives me 6' 7" to my disconnect switches on the stacked inverters (there's never enough room in electrical rooms... especially for the solar guys), my question is if there is a minimum requirement for the two that are closer to the concrete floor? The switches on those two inverters would be roughly 20 -24".
--
A few side questions if you want to tackle them..
Any suggestions on the conduit runs or enclosures from the rendering please fire away. The knock-outs for the inverters made it a real head-scratcher with how to fit all the conduits nicely in that space... It seems as if the type T fittings (1.25") are going to work perfectly with a close nipple to hit the dc knock-outs. Then some pipe easy pipe bends on the 3/4 EMT ac run to the combiner panel.
I think I will add another ac knife blade disconnect under the auxiliary production meter, this will be in addition to the one that is required by the utility on the exterior. Sound like a good idea?
No plan yet for communications, but the dotted rectangle indicates where the enclosure for that may live. On from there I don't know the path yet... May do egauge or something in that enclosure and ct's for the combiner, or bite the bullet and implement the Solrenview into each of the 4 28kW Solectria Inverters..
Image uploading... I kept my image under the kb size, and within the pixel size, and couldn't get the board NOT to down sample it... No sure what I was doing wrong there, do you?