What is it

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electricalist

Senior Member
Location
dallas tx
045f45372feccbf51dc1c2efe6f47408.jpg

A main an illusion?
 

qcroanoke

Sometimes I don't know if I'm the boxer or the bag
Location
Roanoke, VA.
Occupation
Sorta retired........
A main lug kit that I've never seen before?
It doesn't appear to have a hold down or a way of turning it off.....
 

Sierrasparky

Senior Member
Location
USA
Occupation
Electrician ,contractor
Looks like a Sub feed . Not really all that unique. Some panels used this instead of Main Lugs. Have some although not in 3 phase.
 

electricalist

Senior Member
Location
dallas tx
I have never seen one before.
So when it fails it just doesn't work?
If I had more time I should have checked out what fed it.
I don't know that I've seen a panel that big,,200 that didn't have main lugs atleast.
 

John120/240

Senior Member
Location
Olathe, Kansas
OK, It's a sub feed lug. What was the advantage/reasoning to do it this way vs a separate lug for each phase like is common in MLO panels today ? Or let me ask the opposite question. Why was this sub feed lug method discontinued in favor of lugs in a MLO ?
 
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electricalist

Senior Member
Location
dallas tx
I'd think back feeding a 200 amp panel just became a bad idea.
I know zero about how panels are designed but it seems like where the main lugs or main is now looks like thicker metal. Which could make sense.
A 100 amp panel is still bus fed. .
 
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