Is 125 amp service enough?
Is 125 amp service enough?
Others may disagree, you can never really have enough power, but unless you’re planning to run some extremely large machinery, 125A is plenty.
What size wire do I need for 125 amp service?
| Size of Loop | Single Phase Residential | All Others |
|---|---|---|
| 100 amp | #4 | #2 |
| 125 amp | #2 | #1 |
| 150 amp | #1 | #1/0 |
| 175 amp | #1/0 | #2/0 |
What does 125 amp panel mean?
The Panel Rating The panel is rated to support 125 amperes, when connected to a 120/240 volt 3 wire system. This means that 125 amperes can flow through each of the upper bus bars and each main lug, without anything melting or catching fire.
What size breaker Do I need to feed a 125 amp sub panel?
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.
Does a sub panel need a grounding rod?
Yes. ALL sub-panels in detached buildings require at least one, and sometimes two, grounding electrodes, aka ground rods. Whether or not you need two depends upon the soil conditions and the LOCAL code requirements….
Can neutral and ground be on same bar?
Neutrals and grounds are allowed in the same bus bar, However only one neutral wire is permitted under a screw. No other neutrals or grounds are permitted to be under the screw….
How far does ground rod need to be from panel?
8 feet
Why do you separate the ground and neutral in a sub panel?
In my words, if grounds and neutrals are connected together at a subpanel, they won’t have separate paths back to the service equipment. This means you’ll have current on the grounding conductor, which can be bad news for anyone working on the circuit….
When should ground and neutral be connected?
“Whenever you have an auxiliary panel the neutral and ground should not be tied together because the ground wire becomes a parallel path for current with the neutral wire (any current going through the neutral wire will be shared with the ground wire because they have the same connections at both ends).”…
Can I use ground wire as neutral?
a ground and a neutral are both wires. unless they’re tied together with other circuits, and not a ‘home run’ back to the panel, there is no difference between the two where they both end up on the same bus bar in the box….
What happens if line and neutral are reversed?
If your outlet’s polarity is reversed, it means that the neutral wire is connected to where the hot wire is supposed to be. This may not sound like a terrible thing, but it is. There is always electricity flowing out of an outlet with reversed polarity, even if an appliance is supposed to be off….
Why do you bond the neutral to ground?
Commonly the neutral is grounded (earthed) through a bond between the neutral bar and the earth bar. The connection between neutral and earth allows any phase-to-earth fault to develop enough current flow to “trip” the circuit overcurrent protection device.