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Metal Clad Switchgear Thicker gauge other than 11 gauge 2

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buddy1234

Electrical
Aug 3, 2010
5
Do any of you folks know that any manufacturer can make metal clad 13.8kv switchgear with say 8 gauge metal instead of ANSI 37.2 required minimum 11 gauge?
 
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I'd guess there are quite a few, if you have enough money. If you get past the thickness that they can punch and bend with their normal tools, it's going to get costly.

A Google search for metal-clad switchgear should turn up a lot of independent "tin-benders" who buy breaker kits from the major breaker manufacturers and build their own gear.

I'd check with maybe PowerCon, Controlled Power, Lakeshore as a start. I'm sure there are many more.

David Castor
 
Thanks for info! I know Controlled Power and have bought equipment from them before. They have never done it. Some engineer put this in our swichgear specs. I will probably stick with 11 gauge.
 
And then there is ASCO...but it is going to get expensive as you probably already know.

Alan
 
Why would you want to use 8 gauge? It is very hard to work with when building gear.
 
Zogzog: We have problems with 11 gauge cubicles twisting and the roll-in breakers don't make contact properly in the receptacles. I could send you some info to give me some ball park estimate.
 
Twisting? This gear mounted on a fault line in Cali or something?
 
Twisted during the transportation or deforming because the floor may not be leveled. It is floor mounted in a room in Northern VA areas.
 
I am sure it is just a matter of some adjustments to your gear, that would be the first thing to look at. Custom gear with 8 gauge steel will cost 2x or 3x what you paid for yours.
 
Typical switchgear is a bolted frame construction. For the most part, a heaver gauge material will not prevent twisting. Gear must be level and square for drawout breakers to opperate properly.
Proper installation is everything. An option is to order switchgear with a seismic rating. Manufacturers typically add gussets & stiffeners to gear to obtain the seismic rating. This will help to assure that squareness is maintained. In the end though...Good Installation.
 
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