Review actual service demand, leg loading and panel spaces, coordinate equipment and utility work, then retain required tests and inspection records.
Record the service/panel labels, circuit directory, known issues and the loads to add or remove. Ask the utility and local authority about service capacity, permits, metering and inspection requirements. Have a qualified professional inspect the actual equipment condition and installation constraints rather than deciding from breaker count or house size alone.
Have the designer select the complete method appropriate to this dwelling and work scope. Keep category worksheets for general loads, appliances, cooking, dryers, motors, heating/cooling and EV charging. Reconcile the approved demand values and actual split-phase leg allocation, including adders only once, against the proposed service or feeder limit.
Choose the proposed panel model and list existing and added devices with their actual physical spaces and supported circuits. Verify allowed breaker families and positions, bus and terminal limits and required AFCI/GFCI protection for the scope. Resolve unknown protection decisions before procurement.
Have the qualified designer specify conductors, protection, grounding/bonding and terminations for the actual installation. Screen supported chart candidates where the ordinary method applies, or compare independently documented feeder candidates. Recalculate voltage drop for the chosen conductor and operating path, with separate neutral or unbalanced cases where needed.
Compare itemized proposals including utility work, permit fees, equipment, grounding/bonding corrections, feeders, labeling, wall repairs and inspection. Confirm the responsible installer and utility outage/reconnection process. Arrange essential-load needs during the outage and retain design changes and approval records.
Have the installer document the required electrical tests, protection tests, final circuit directory, equipment settings and inspection results. Resolve failed tests and compare the as-built circuit schedule with the approved plan. Export the updated demand and space cases with the one-line diagram, manuals and contact information for later additions.
Keep the dated equipment list, document references, responsible installer and unresolved decisions; export the record with the calculation cases.
Reconcile the documented demand categories and split-phase leg allocation; use the separate space inventory for actual device quantities and occupied positions. · Use Split-phase demand reconciliation for documented category factors/adders and leg allocation; inspect each leg instead of only total VA. · Use Panel space and circuit inventory to total actual occupied spaces and listed circuit counts independently of amperes.
Compare an actual EVSE setting and charging window when charging is part of the capacity decision.
Record each circuit’s reviewed AFCI requirement and planned physical breaker or approved alternative method; count unique assemblies and resolve unknown decisions.
Map physical GFCI devices to same-circuit outlets and record each required outlet’s actual downstream test result; keep unknown requirements and failures visible.
Screen the finite manufacturer chart using required ampacity, the actual breaker, correction factor and limiting terminal column; review every failed condition.
Compare actual feeder candidates using each one’s permitted ampacity and R/X; require both ampacity and voltage-drop checks to fit.
Select only from the exact approved breaker catalog using noncontinuous and weighted continuous current plus the verified protection ceiling.
Use the AC mode with actual conductor R/X, operating current, length, phase arrangement and chosen equipment/design limit; evaluate relevant line-to-neutral paths separately.
Compare actual installed quotes, deposits, chosen contingency and confirmed reimbursements; retain the scope and date of each case.
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The county worksheet illustrates separate lighting, appliances, cooking, dryer, motor and other-load treatment. Its historical references are an example of structure, not a substitute for the currently adopted method at your site.
Conductor insulation and equipment terminal ratings are distinct limits. Apply the selected installation and cable rules before comparing candidates.
The actual circuit and project scope determine required protection. Count equipment assemblies from the reviewed schedule.
A panel price alone omits utility, service, feeder, wall-repair and inspection work.
Both can constrain a project, but one cannot be calculated from the other.