What is the difference between single-phase (1-Ø) and three-phase (3-Ø)?
Residential loads are typically single-phase (1-Ø). Commercial and irrigation loads may have motors that require three-phase (3-Ø) power. Those loads tend to be a mixture of single (1-Ø) and three-phase (3-Ø).
I’m a new builder/contractor. What are Idaho Power's requirements?
I just bought a house, can I request my power to be turned on or changed into my name online?
Can my panel or service be changed?
Where does Idaho Power want me to put the meter at my new house?
Are there requirements for temporary poles?
What are the height requirements for attaching an overhead service?
Minimum height requirements vary depending on the service voltage and where the service is installed. There are also some limits on mast heights above ground and above roofs for Idaho Power to safely connect a service. Refer to our Overhead Residential Requirements or Commercial/Irrigation Requirements for details.
Will I save any money by putting in my own trench and conduit, versus Idaho Power doing it for me?
What are the requirements for putting in my own trench and conduit?
For residential services, refer to the Underground Residential Conduit Installation.
How deep does a trench for electric service need to be?
The trench needs to be deep enough to allow for a minimum of 30 inches of cover above the conduit. Refer to the Underground Residential Conduit Installation for details.
How many conduit bends (curves) am I allowed to use?
Not including the bend up to the meter or at Idaho Power’s equipment, 135 degrees total. Refer to the Underground Residential Conduit Installation for details.
What is the maximum length my underground service can be?
An underground service should not exceed 125 feet without prior approval from Idaho Power. Refer to the Underground Residential Conduit Installation for details.
What size and type of conduit should I use?
Subject to the maximum length of 125 feet and 135 degrees of bends. Use grey, UL-listed, schedule 40 conduit, bends and fittings. Residential services up to 200 amps require 2-inch conduit. Residential services larger than 200 amps and up to 400 amps require 3-inch conduit. For residential services, refer to the Underground Residential Conduit Installation for details. For commercial or irrigation services, call 388-2323, or 1-800-488-6151 from outside the Treasure Valley.
I am a large subdivision builder. Can I go online to submit several building lots that are ready for Idaho Power to install services at the same time?
Is there a way to submit my request to start new or temporary electric service for my construction project online?
What do I need to do to prepare my site for construction?
What is maximum available fault current?