Table of Contents
- 1 What size wire do I need to run a hundred amp service to my garage?
- 2 What size service entrance cable do I need for a 150 amp?
- 3 What size ground do I need for a 400 amp service?
- 4 How many feet of cable do you need for a 12 amp circuit?
- 5 How big of a wire do I need for a 200 foot run?
- 6 How many volts can a wire carry?
What size wire do I need to run a hundred amp service to my garage?
2-gauge
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 size service entrance cable do I need for a 150 amp?
| SERVICE ENTRANCE CONDUCTORS SIZE AND RATING | ||
|---|---|---|
| Service or Feeder Rating | Copper Conductors | Aluminum or Copper-Clad Aluminum |
| 100 Amps | #4 AWG | #2 AWG |
| 125 Amps | #2 AWG | #1/0 AWG |
| 150 Amps | #1 AWG | #2/0 AWG |
What size wire do I need for 400 amp service?
400 amp service requires a wire size of 1,000 kcmil.
What size ground do I need for a 400 amp service?
MIN. SIZE OF EQUIPMENT GROUNDING CONDUCTORS (EGC) for Grounding Raceway & Equipment
| Rating or setting of Automatic Overcurrent Device (OCPD) in Circuit ahead of Equipment [i.e Circuit Breaker]. Not exceeding (Amps) | Size (AWG or kcmil) | |
|---|---|---|
| 100 | 8 | 6 |
| 200 | 6 | 4 |
| 300 | 4 | 2 |
| 400 | 3 | 1 |
How many feet of cable do you need for a 12 amp circuit?
For every extra 50 feet of cable/wire up to #8 normally you upgradeto the next size, consult you local codes if your unsure about doubleand triple length runs. Ex: #6 is sometimes mandatory for a 200 foot 12 amp run but can be used up to 300 feet on a 12 amp circuit.
How big should a breaker be for an electric motor?
Breaker size should generally be 125% of FLA of motor. A good field reference for maintenance and troubleshooting is Ugly’s Electric Motor and Controls (Ugly’s Electric Motors And Controls, 2014 Edition).
How big of a wire do I need for a 200 foot run?
For every extra 50 feet of cable/wire up to #8 normally you upgradeto the next size, consult you local codes if your unsure about doubleand triple length runs. Ex: #6 is sometimes mandatory for a 200 foot 12 amp run but can be used up to 300 feet on a 12 amp circuit. Note:
How many volts can a wire carry?
The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 Volts, 60°C through 90°C (140°F through 194°F), not more than three current-carrying conductors in raceway, cable, or earth(directly buried), based on ambient air temperature of 30°C(86°F). Wire Size Chart and Maximum Amp Ratings