2-2-2 Triplex

Status
Not open for further replies.
Homeowner called supply house today and asked if they had a 90 amp breaker, the guy says no but I have a 100 amp you can get. I shook my head to the homeowner and said no you need a 90. I guess there are a lot of installs with a 100 protecting #2 aluminum.


Speaking of aluminum, I did a little reading through some old threads and some people say use an anti-oxidant on aluminum connections and others say it isn't necessary with modern aluminum wires.

I have only ever dealt with copper so what say you? Do you use it or not?
 
DBoone said:
Homeowner called supply house today and asked if they had a 90 amp breaker, the guy says no but I have a 100 amp you can get. I shook my head to the homeowner and said no you need a 90. I guess there are a lot of installs with a 100 protecting #2 aluminum.


Speaking of aluminum, I did a little reading through some old threads and some people say use an anti-oxidant on aluminum connections and others say it isn't necessary with modern aluminum wires.

I have only ever dealt with copper so what say you? Do you use it or not?
Click to expand...

Anti-oxidant not required, but old farts like me still use it.

Cheap extra corrosion protection.

A 90A breaker should be installed, but there are thousands of installs using #2 AL and a 100A breaker without a problem, not saying it is right but the world ain't gonna end.

I would like to see an EGC though, but as I said- three wire was legal in days gone past.
 
Last edited:
jumper said:
Anti-oxidant not required, but old farts like me still use it.

Cheap extra corrosion protection.

A 90A breaker should be installed, but there are thousands of installs using #2 AL and a 100A breaker without a problem, not saying it is right but the world ain't gonna end.

I would like to see an EGC though, but as I said- three wire was legal in days gone past.
Click to expand...

Told him to buy a 100A panel with a main breaker for the shop, protect feeder with 90A breaker at meter and use main breaker in shop as a disconnect. Personally I would love to see an EGC too but since it's already been bought and buried by the homeowner and a 3-wire was considered safe and legal up through (2007 ?) I have decided to do it if he gets right with the price.

That doesnt make much sense I know.... make the man order a 90A breaker but will turn around and hook up a 3-wire feed to a shop. :huh:

I guess there is a little bit of maverick in all of us. :cool:
 
DBoone said:
Told him to buy a 100A panel with a main breaker for the shop, protect feeder with 90A breaker at meter and use main breaker in shop as a disconnect. Personally I would love to see an EGC too but since it's already been bought and buried by the homeowner and a 3-wire was considered safe and legal up through (2007 ?) I have decided to do it if he gets right with the price.

That doesnt make much sense I know.... make the man order a 90A breaker but will turn around and hook up a 3-wire feed to a shop. :huh:

I guess there is a little bit of maverick in all of us. :cool:
Click to expand...

I like to look at the big picture.......

If Mississippi goes up in flames, I is nowheres near.:D
 
And by the way, I'm getting offended at the subtle digs at Mississippi.....

I'm going to my safe-space :roll:
 
Oregon still allows 3 wire feeds for new installs assuming you still meet the guidelines required for a 3 wire feed.

Have you verified Mississippi or your local AHJ doesn't have a amendment allowing the same?
 
Cow said:
Oregon still allows 3 wire feeds for new installs assuming you still meet the guidelines required for a 3 wire feed.

Have you verified Mississippi or your local AHJ doesn't have a amendment allowing the same?
Click to expand...

Haven't verified. I will do some research on it.
 
Got the 90A breaker put in. Got in a pinch so no anti-oxidant.

Homeowner has been doing the electrical in his shop but my buddy and I went ahead and hooked up the feeder at the meter.

Its a Midwest meter with a factory installed Eaton main breaker, and the supply house sent a Siemens 90A breaker.

I guess Siemens is compatible with them?

** On a side note, I originally said it's 2-2-2, but it's 2-2-4

006.jpg
 

Attachments

  • IMG_6612.jpg
    IMG_6612.jpg
    139.3 KB · Views: 0
Last edited by a moderator:
Can a Mod flip the picture, I could not figure out how to do it on my phone.


Try this....

rotate.jpg

Click to open it full sized.

GD
​
 
Last edited by a moderator:
DBoone said:
Got the 90A breaker put in. Got in a pinch so no anti-oxidant.

Homeowner has been doing the electrical in his shop but my buddy and I went ahead and hooked up the feeder at the meter.

Its a Midwest meter with a factory installed Eaton main breaker, and the supply house sent a Siemens 90A breaker.

I guess Siemens is compatible with them?

** On a side note, I originally said it's 2-2-2, but it's 2-2-4
Click to expand...
Midwest instructions typically state just about every 1 inch wide breaker out there as being acceptable, they don't have their own breakers to put in them.
 
Status
Not open for further replies.
Top