So to be clear, the inspector is wrong: it is NOT an NEC requirement.
It is only a California requirement. NEC 2023 only requires a 100 A
main load center and disconnect per 225.39(C). Further, 710.15(A) allows
the inverter and feeder to the Load center to be even less in off grid
applications. The rest of us in the other 49 states are Not required
to comply with the 200 A requirement.
Good Luck out there.
Thank you,
Ray Walters
Remote Solar
On 3/28/2024 12:33 PM, Lloyd Hoffstatter via RE-wrenches wrote:
William,
Here is the CA Energy Code with the upsized busbar requirements under
solar / ess readiness:
https://title24energyreports.com/articles/basic-facts-changes-2022-energy-code.php
Best regard
Title 24: 2022 Energy Code - Basic Facts | CompuCalc
<https://title24energyreports.com/articles/basic-facts-changes-2022-energy-code.php>
Summary of changes and updates in the 2022 California Energy Code
title24energyreports.com
Lloyd Hoffstatter, M.S. Applied Solar Energy
Inaugural NABCEP Cetrified PV Installer Emeritus
Director, Sunstruck Consulting
ll...@sunstruckconsulting.com
845-657-8132 (office)
914-844-3404 (cell)
------------------------------------------------------------------------
*From:* RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> on
behalf of William Miller via RE-wrenches
<re-wrenches@lists.re-wrenches.org>
*Sent:* Thursday, March 28, 2024 1:00 PM
*To:* RE-wrenches <re-wrenches@lists.re-wrenches.org>
*Cc:* William Miller <will...@millersolar.com>
*Subject:* [RE-wrenches] Minimum bus size, new requirements
Friends:
A local building official recently wrote this:
This is to comply with the new codes (California Energy Code and the
Nation Electric Code) that require this minimum buss rating regardless
of the service size or main size.
The new code allegedly requires a minimum bus rating of 225A in all
new services of 200A rating or less.
Do any of you know what new code this might be?
Thanks in advance for your time.
William
Miller Solar
17395 Oak Road, Atascadero, CA 93422
805-438-5600
www.millersolar.com
<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.millersolar.com_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=p2tHyHEAjVe2zSh4C_236V4KkHnn0z0ynUvWz0mobds&m=9uejohzp8xlaOjgzFRzK5pSkQX5Jtrq-KM0zg-kn9sGvQF-Ezmo9hA2K0hbNA1ns&s=7RIp61FIGVkUrnLeJuaaLlwwPwqGeMEQXVgB04GNECk&e=>
CA Lic. 773985
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