Tools · TEP Standards
A contractor’s hub for TEP service, metering, and interconnection — the official documents, the requirements we field most, and an assistant grounded in TEP’s published guidance. TEP’s standards change, so the official documents and TEP are always the final word.
Always Current
These link straight to TEP’s own pages and current publications. Individual standard sheets (SR-405 metering, SR-414 CT metering, SR-600 grounding, and the rest) live inside the 2026 ESR Book. Note: TEP publishes the book annually (around March) and keeps revising afterward — check the Monthly Summary of Revisions on the ESR portal for changes made after the book published. If something looks off, confirm directly with TEP service planning.
New to the TEP process? Start with our plain-language companion guide — TEP new service requirements for commercial projects — which walks the whole flow from application to energization before you dig into the standard sheets.
The complete 2026 Electric Service Requirements Book in one PDF — the up-to-date edition.
Standards PortalTEP’s ESR portal — standards, revision summaries, and future editions.
Start ServiceApply for a new service, upgrade, or temporary power.
Approved EquipmentTEP’s own reference list of approved meter sockets and metering equipment — republished quarterly.
Solar / BatteryDistributed generation interconnection requirements — commercial solar and battery systems.
Rules & RegsRules for establishing electric service.
Rules & RegsService line and establishment rules — who trenches, who owns the cable.
From TEP’s Published Guidance
Quick reference based on TEP’s published guidance — confirm the current edition with TEP before you build to it.
Working in Trico territory? TEP doesn’t serve the whole metro — Trico Electric Cooperative serves areas including much of Marana, Corona de Tucson, and other outlying areas, and has its own service requirements. Confirm which utility serves your site before building to a standard.
Approved Equipment
TEP publishes its approved metering service equipment in standard sheet SR-452 — the authoritative list of meter sockets and metering equipment accepted for purchase or stock, covering 0–200 A and 201–400 A single- and three-phase services. TEP republishes it quarterly (January, April, July, October), so always use the posted sheet, not a cached copy.
TEP’s reference list of approved equipment, straight from the ESR book.
We spec, procure, and install TEP-accepted metering and service equipment on commercial projects every week — ask the assistant below, or have our team review your service spec before you buy gear.
The Process
Every project differs and TEP’s process governs, but a new or upgraded commercial service usually moves through these steps. Build the lead time into your schedule — utility design and equipment are often the long poles. For the step-by-step version in plain language, see our TEP new service requirements guide.
Submit TEP’s construction application with site plan and load information. Earlier is better — this starts TEP’s design clock.
TEP service planning designs the service, sets the point of connection and transformer location, and identifies any easements required.
The contractor installs the trench, conduit, pads, and metering equipment to TEP’s spec — using gear from the approved list (SR-452). Call Arizona 811 before digging.
The AHJ and TEP check the installation — sockets, connections, trench and conduit, labeling. Corrections here are the most common schedule slip.
TEP pulls in or terminates its service cable, sets the meter, and releases the service — the site goes live.
We handle the application, utility coordination, trenching, and installation as one self-performed scope. Request a bid.
Ask
Ask about TEP service, metering, CT installations, trenching responsibilities, grounding, or interconnection. The assistant answers from TEP’s published guidance above — with direct links to the right standard sheet — and points you to TEP for anything it can’t confirm. It won’t guess equipment models or revisions. When an answer comes from a specific standard sheet, the assistant shows a snapshot of that page with a link straight to it in the official book — no scrolling through a 100-page PDF.
How it works & please verify. The assistant is grounded in TEP’s published guidance (linked above), not guesswork — for the approved-equipment list, exact revisions, or commercial tables, it points you to the official TEP document or to confirm with TEP. TEP standards change; the official documents and TEP service planning are always the final word. This is a contractor convenience, not an official TEP publication. Arizona Electrical Solutions is not affiliated with or endorsed by Tucson Electric Power.
We handle utility coordination, point-of-connection, metering, and the install — self-performed across Arizona.
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