Replace Feeder Breaker

1503 Views 13 Replies 8 Participants Last post by arminius, Apr 11, 2020

arminius

Discussion Starter · Apr 10, 2020

I'm required to switch out current 200A two-pole feeder breaker with 150A two-pole (see pic of both in my panel).

I've never done anything like this before. Here are the steps I'm thinking:

1) turn off power to at breaker
2) remove that connector to left of current 200A breaker (never seen anything like that before)
3) pull out 200A breaker
4) put in new 150A breaker
5) hook up connector from step 2

Let me know suggestions, thank you!

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1 - 14 of 14 Posts

rjniles

· #2 · Apr 10, 2020

Turn off main breaker first.

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Oldmaster

· #3 · Apr 10, 2020

The 150 amp has 4 terminals. They may not accept the conductor size. Interesting breaker.

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Oldmaster

· #4 · Apr 10, 2020

Wondering if the plate that the wires mount to on the 200 amp. breaker comes off and is used on the 4 terminals on the 150 breaker. Notice the 150 is 2-75 amp breakers tied together. Strange.

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Jim Port

· #5 · Apr 10, 2020

Never did find out what kind of inspector this was, did we?

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Bondo

· #6 · Apr 10, 2020 (Edited)

Here are the steps I'm thinking:

Ayuh,..... I Ain't an Electrician, But,......

That breaker in yer hand is not for that application, in any way,......
And,.....
You need to pull the meter, 1st(first), as that's what's uphill for those big red, 'n black wires,.....
They'll be HOT, just turnin' off the breaker you want to take out,......
That's the Main breaker, Incoming,....

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Jim Port

· #7 · Apr 11, 2020

They are not trying to replace the main breaker.

Did anyone perform a demand load calculation to see if the smaller breaker will serve the downstream load?

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surferdude2

· #8 · Apr 11, 2020 (Edited)

That breaker is approved for use as a service disconnect, not a branch breaker. That's a 4-pole version, get the 2 pole version.

2-pole 150 amp HOMB Branch Breaker

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brric

· #9 · Apr 11, 2020

The new breaker pictured is a HOM2150. You need a HOM2150BB.

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seharper

· #10 · Apr 11, 2020 (Edited)

Well, the screws on the old breaker are allen wrench drive. Normally you use an Allen socket in a ratchet. Lefty loosey.

That connector is not a thing. It's plainly an integral part of the 200A version of that breaker.

It's also a part of the genuine 150A breaker. Look at that thing, it's exactly what you need! I am now becoming suspicious of your parts source. Where did you acquire this? Did they give you any advice/directions?

Something smells very fishy.

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arminius

Discussion Starter · #11 · Apr 11, 2020

seharper said:
Well, the screws on the old breaker are allen wrench drive. Normally you use an Allen socket in a ratchet. Lefty loosey.

That connector is not a thing. It's plainly an integral part of the 200A version of that breaker.

It's also a part of the genuine 150A breaker. Look at that thing, it's exactly what you need! I am now becoming suspicious of your parts source. Where did you acquire this? Did they give you any advice/directions?

Something smells very fishy.

Thanks for link. No instructions from anyone, that is why I'm on this forum!