Anyone else mandating 200A....?

200A service required - I ran into this in Wagoner, OK. About 3 or 4 years ago. Not a mandate, but the inspector said they strongly encourage everything to be a 200A service. The load calculation was well under 100A.
 
Birken Vogt said:
As we said at one old job I worked at, what do they care, it's not their money.
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If the inspector wants you to do lighting circuits with 10 gauge, It's not your money just do it. At some point you have to put yoru foot down and say NO.
 
wwhitney said:
What code reference is given by the inspector?

Cheers, Wayne
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He goes off of the CA electrification requirement that requires the buss bar to be 225A rated.

I asked for code section to no avail. After multiple emails, he not willing to see my load cals.

Frankly, the client doesn't want to deal with it and wants to get the service up and running.
 
Ponchik said:
He goes off of the CA electrification requirement that requires the buss bar to be 225A rated.
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OK, that's the section jaggedben and I were discussing. The full text is below.

Cheers, Wayne

CA Energy Code 2025 150.0(s) said:
Battery Energy Storage Systems (BESS) ready. All single-family residences that include one or two dwelling units, which a load-serving entity provides with electrical service for the dwelling unit that is greater than 125 amps, shall meet the following.

(1) At least one of the following shall be provided:
(A) BESS-ready interconnection equipment with a minimum backed-up capacity of 60 amps and a minimum of four BESS-supplied branch circuits specified in Section 150.0(s)2, or
(B) A dedicated raceway from the main service to a panelboard (subpanel) that supplies the branch circuits in Section 150.0(s)2. All branch circuits are permitted to be supplied by the main service panel prior to the installation of a BESS. The trade size of the raceway shall be not less than 1 inch. The panelboard that supplies the branch circuits (subpanel) must be labeled "Subpanel shall include all backed-up load circuits."

(2) A minimum of four branch circuits shall be identified and have their source of supply collocated at a single panelboard suitable to be supplied by the BESS. At least one circuit shall supply the refrigerator, one lighting circuit shall be located near the primary egress and at least one circuit shall supply a sleeping room receptacle outlet.

(3) The main panelboard shall have a minimum busbar rating of 225 amps.

(4) Sufficient space shall be reserved to allow future installation of a system isolation equipment/transfer switch within 3 feet of the main panelboard. Raceways shall be installed between the panelboard and the system isolation equipment/transfer switch location to allow the connection of backup power source.

Exception to Section 150.0(s): Buildings which have a BESS installed.
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