metaldome88
Member
This is a two part question:
A customer is requesting a Killark panelboard (B7 series) to be installed in a Class1, Div2 location. They want it mounted on the exterior. This is where i'm getting confused.....
The panel is rated for Class1, Div1&2, Groups B,C,D; It also is listed under Nema3/4/4X (non-classified) and Type 7 & 9 (classified location).
Type 7 & 9 are indoor use, while Type 8 is indoor/outdoor. However, are Type 8 enclosures still available? I've seen charts that include Type 8 and charts that go from Type 7 to 9. My main concern is that those outdoor use ratings (3/4/4X) are ?non-classified? location ratings. Since this project has called for Class1, Div2 equipment all along, should the enclosure be rated for outdoor ?classified locations? (Type 8), or is the fact it's rated for Class1, Div1&2 AND outdoor rated (although under non-classified location), will this AC panel meet the code requirements or should we add a disclaimer? They are saying NEMA 7 is good for outdoor, and they have NEMA 7 outdoor all over the place. I don't want to 'over-analyze' but something just doesn't sound right and at a cost of >$11,000, I want to make sure this panel can be installed outdoors in a hazardous location. Any help would be greatly appreciated.
A customer is requesting a Killark panelboard (B7 series) to be installed in a Class1, Div2 location. They want it mounted on the exterior. This is where i'm getting confused.....
The panel is rated for Class1, Div1&2, Groups B,C,D; It also is listed under Nema3/4/4X (non-classified) and Type 7 & 9 (classified location).
Type 7 & 9 are indoor use, while Type 8 is indoor/outdoor. However, are Type 8 enclosures still available? I've seen charts that include Type 8 and charts that go from Type 7 to 9. My main concern is that those outdoor use ratings (3/4/4X) are ?non-classified? location ratings. Since this project has called for Class1, Div2 equipment all along, should the enclosure be rated for outdoor ?classified locations? (Type 8), or is the fact it's rated for Class1, Div1&2 AND outdoor rated (although under non-classified location), will this AC panel meet the code requirements or should we add a disclaimer? They are saying NEMA 7 is good for outdoor, and they have NEMA 7 outdoor all over the place. I don't want to 'over-analyze' but something just doesn't sound right and at a cost of >$11,000, I want to make sure this panel can be installed outdoors in a hazardous location. Any help would be greatly appreciated.