# Non-metalic NEMA box--Observatory

W

#### W. eWatson

Jan 1, 1970
0
My observatory story continues. I've been getting some tips from a guy
in Hawaii about how to proceed over the last 4 months. I finally decided
to hire him to build some of the components in HI. He will then ship
them to me, and I will do the installation, perhaps with an aid of a

Right now I'm buy the parts that he will need. He needs two NEMA
non-metallic boxes that are about 2'x2'x8". Ideally, it would be good if
I could find a place in HI that carries them. That we reduce shipment
there. This morning I've called Grainger, ZORO, Graybar, and some
suppliers in HI. Haven't tried Platt.

So far the biggest box anyone can come up with is 18"x12"x8.7". Some
ofthese boxes are selling at around $1000. Strangely, ZORO's is around$200-250. I guess my inexperience is at play here. I need to call the
fellow to get some better details what he's after, and why that 2'x2'x8"
request seems out of the cards.

Anyway, I'm just throwing this msg out to the group for comments. $1000!??? Strangely, when I decided to hire the guy, I found two more people like him that do observatory work. I'm sticking with HI though. They all do high quality work. T #### Tom Biasi Jan 1, 1970 0 My observatory story continues. I've been getting some tips from a guy in Hawaii about how to proceed over the last 4 months. I finally decided to hire him to build some of the components in HI. He will then ship them to me, and I will do the installation, perhaps with an aid of a licensed electrician. Right now I'm buy the parts that he will need. He needs two NEMA non-metallic boxes that are about 2'x2'x8". Ideally, it would be good if I could find a place in HI that carries them. That we reduce shipment there. This morning I've called Grainger, ZORO, Graybar, and some suppliers in HI. Haven't tried Platt. So far the biggest box anyone can come up with is 18"x12"x8.7". Some ofthese boxes are selling at around$1000. Strangely, ZORO's is around
$200-250. I guess my inexperience is at play here. I need to call the fellow to get some better details what he's after, and why that 2'x2'x8" request seems out of the cards. Anyway, I'm just throwing this msg out to the group for comments.$1000!???

Strangely, when I decided to hire the guy, I found two more people like
him that do observatory work. I'm sticking with HI though. They all do
high quality work.

That is a strange size. The cost not only depends on the size but the
NEMA class. Ask him what class he needs and to explain that size.

Automation Direct has a good supply of enclosures.

Tom

W

Jan 1, 1970
0
W

#### W. eWatson

Jan 1, 1970
0
....
Hammond makes a wide selection of NEMA boxes:
http://www.hammfg.com/electrical

Why not ask him to get the boxes? He knows what sizes he can work
with, and what suppliers are available there.
Presumably I will save money--mainland vs HI, shipping and maybe
generally higher prices there. Possibly cut down on his time searching
for them. I actually I called four suppliers on Hawaii this morning, and
none had any size close to it. I found ZORO has 18"x18"x9". I just sent
him a msg about that. Maybe 3 boxes 18"-ers !!!

J

#### Jasen Betts

Jan 1, 1970
0
Right now I'm buy the parts that he will need. He needs two NEMA
non-metallic boxes that are about 2'x2'x8". Ideally, it would be good if
I could find a place in HI that carries them.

"NEMA" is kind of meaningless on its own like that.

how non-metallic does it need to be?

Is an ABS box with stainless fasteners even acceptable?

Will a 12U 19" rack cabinet a glass front (metal sides and open back) work?

C

Jan 1, 1970
0
Michael A. Terrell said:
How is "National Electrical Manufacturers Association" meaningless?

a NEMA enclosure has no meaning by itself. NEMA has more than one
specification for one box, if you weren't aware.

W

#### W. eWatson

Jan 1, 1970
0
"NEMA" is kind of meaningless on its own like that.

how non-metallic does it need to be?

Is an ABS box with stainless fasteners even acceptable?

Will a 12U 19" rack cabinet a glass front (metal sides and open back) work?
He wants a NEMA non-metallic, and would prefer a "window". If not a
window then a door with latches.

W

#### W. eWatson

Jan 1, 1970
0
You're kidding!

What an idiot. His description was adaqute for anyone who has done
industrial electrical work. I always needed steel boxes because of RF.
They are quite common at AM radio stations for the antenna tuner
cabinets, and tower light controls. I still have a few used ones,
somewhere in the shop.
I discovered via Wikipedia that there are about 11 types of NEMA boxes.
I think type 1 is sufficient.

Replies
4
Views
540
Replies
19
Views
2K
Replies
15
Views
652
Replies
6
Views
1K
Replies
5
Views
1K