Is the sub panel a 100 amp breaker?
The sub panel is protected by 100 amp breaker in the main panel. I thought that this was ok since the 200 amp breaker in the sub panel was just acting as a disconnect.
Can a 100 amp breaker be used as a 200 amp breaker?
The panel and the wire are protected by the 100 amp breaker and the fact that the panel has a 200 amp breaker is not significant. I think it is compliant. The basic rule is that everything (i.e., your subpanel) must be protected against overcurrent by a device rated no higher than its (i.e., your subpanel’s) own rating.
Can a case switch be used as a sub panel breaker?
The sub-panel main breaker acts like a molded case switch in this case. You have to make sure your neutrals float and your grounds are on a separate ground bar and bonded to the sub-panel enclosure. Click to expand… I have used SER cable and it’s protected by 100 amp breaker. Neutral are floating and grounds are separate bonded to panel.
Are there 12 slots in a double pole breaker?
Yes you have 12 slots the double pole breaker will only take 2 slots. Will you have enough ampacity to run everything with the new sub panel? There is not enough information to answer fully but probably.
What kind of wire do I need for a 125 amp breaker?
If you have a 125 amp breaker you need 125 amp wire. See the table here. You need to use the 75° column since no one makes a 90° breaker just yet. Since this is a single phase dwelling service you can use #2 AWG copper or 1/0 aluminum for a 125 amp service or main feeder.
Do you need a 75° column for a 125 amp panel?
Does going from a 100 AMP to a 125 AMP panel require any change in the gauge of the wire coming from the meter? If you have a 125 amp breaker you need 125 amp wire. See the table here . You need to use the 75° column since no one makes a 90° breaker just yet.
How many twins are in a 125 amp panel?
The panel model number will usually tell you quickly if twins/tandems can be used. The example you gave; HOM 2448 M125PC. This is a 24 space, 48 circuit, 125 amp panel. So 24 one inch spaces, but you can use all 24 twins giving you 48 potential circuits.