What gauge wire do I need for 100 amp service?
When it comes to the lines connecting master and secondary panels, where the line will carry as much as a full 100 amps, use a 2-gauge non-metallic sheathed electrical cable. The cable must contain one or two hot wires depending on your needs, one neutral wire, and one ground wire. Each wire should be 2-gauge in size.
What is the service entrance cable?
Service Entrance (SE) cables are electrical cables that bring power from electrical companies to residential buildings and our homes. These electrical cables are rated 600 volts and are suitable for both dry and moist applications. Both SER and SEU are flame-retardant and resistant to moisture.
What size wire is used for service entrance?
| SERVICE ENTRANCE CONDUCTORS SIZE AND RATING | ||
|---|---|---|
| Service or Feeder Rating | Copper Conductors | Minimum Conduit Size |
| 100 Amps | #4 AWG | 1 ¼ inch |
| 125 Amps | #2 AWG | 1 ¼ inch |
| 150 Amps | #1 AWG | 1 ¼ inch |
What is the standard height of service entrance?
The bottom of the service conductor drip loop must be at least 12 feet above the ground. The entrance cable must have at least 18 inches of excess wire left past the weather head to allow connection of the service wire.
What are the two types of service entrance?
Summary
- The service entrance is the place where power enters a residence.
- A mast service drop is an overhead service drop where the service drop is connected to the mast knob.
- Drip loops refer to the sag in the service drop before it is connected to the clevis or mast knob.
What is the minimum size of wire for service entrance conductors?
We believe this section requires that the service entrance conductors to have a minimum rating of not less than 300A and must therefore be a minimum size 350kcmil.
How far can you run #2 aluminum wire?
Example calcuation 2 – Aluminum Wire, 3 Phase power Cable run: 400 ft. 1 conductor per phase utilizing a 750 kcmil Aluminum conductor installed Direct Buried will limit the voltage drop to 2.64% or less when supplying 194 amps for 400.0 feet on a 240 volt 3 phase system.