Open the cover sheet before you count modules. On a Lynn Massachusetts solar permit pulled after April 24, 2026, the first reject is a cover sheet that still cites the 2023 NEC. The second reject is a roof plan that shows a path and never writes the width in inches. Fix those two sheets and the reviewer has a real set to check.
Athol Energy prepares the drawings and the stamps the installer submits. We are not the crew on the roof. The installer files the application and builds the job. Our work is the sheet that names the right code year and the roof plan that a fire reviewer can measure with a scale that is already written in inches.
The edition on the cover sheet and the title block
527 CMR 12.00, the Massachusetts Electrical Code, is the 2026 National Electrical Code as released by the NFPA Standards Council on August 20, 2025, with Massachusetts amendments. It is effective April 24, 2026. That is the citation a permit pulled now has to carry. A set that still says 2023 NEC is citing the wrong edition.
Reviewers are not asking for a tour of what changed inside the book. Do not add a paragraph about article edits. The usable check is the edition printed on the cover sheet and repeated in the title block. Spell the regulation. Spell the year. Spell the effective date. If the cover says one thing and another sheet still wears last year's block, the set looks pasted together.
Reprint the block if the permit is pulled now
If the permit is pulled after April 24, 2026, reprint the title block even when the job was drawn earlier. The cover has to cite the edition in force on the day it is filed.
Check the block on the electrical sheets, the roof plan, and the attachment sheet. One leftover "2023 NEC" in a corner is enough to send the package back. Search the PDF for 2023 before you call it ready.
Lynn Massachusetts solar permit pathways need inches
The second reject is quieter. A hatch runs along the eave. A note says access. Nobody wrote 36 inches on a dimension line. Fire plan review in Massachusetts is working from a checklist based on 527 CMR 1.00, and that checklist is measuring a width.
527 CMR 1.00, the Comprehensive Fire Safety Code, is based on NFPA 1, 2021 edition, with Massachusetts amendments. It has been the state fire code framework since the December 9, 2022 edition, with the amendment package effective May 12, 2023. You do not need that history on the sheet. You need the widths the checklist uses for one- and two-family dwellings.
- At least two pathways, 36 inches wide, from gutter to ridge. One of them is on the street or driveway side.
- Each roof plane that has PV needs a 36-inch pathway on that plane, on an adjacent plane, or straddling the two.
- Pathways should avoid vent pipes, conduit, and mechanical equipment, so a roof ladder can lie flat.
Draw the path as a strip from the gutter up to the ridge, not as a note parked at the eave. Put 36 inches on the dimension string. A graphic scale in the title block is not a substitute. The reviewer should not have to multiply a bar scale to learn whether the hatch is wide enough for a ladder.
Street side, every plane, nothing in the way
Label the street or the driveway so the arrival path is obvious.
Then walk each plane that carries modules. That plane needs a 36-inch pathway on itself, on an adjacent plane, or straddling the two. If the path straddles, the dimension still has to read as a 36-inch pathway where the ladder will sit.
Keep vent pipes, conduit, and mechanical equipment out of the path. Call them out on the roof plan so it is obvious they sit outside the strip. A conduit hop drawn through the clear width means the ladder cannot lie flat. Move the conduit on the drawing. The attachment layout has to agree. If a rail or a conduit run lands in the strip, the hardware moves, not the dimension. The roof attachment layout is part of the same pass as the fire path.
Ridge setback is a measured band
Ridge rules are a separate dimension from the 36-inch pathway. On a one- or two-family roof that is not sprinklered, an array up to 33 percent of the plan-view roof area keeps 18 inches on each side of a horizontal ridge. If the array is more than 33 percent of that plan-view area, the ridge setback is 36 inches on each side.
If the house is sprinklered, the 18-inch ridge setback holds up to 66 percent of plan-view area. Above that, use 36 inches on each side. A roof pitch of 2:12 or less has no ridge setback. Note the pitch on the sheet so the exception is visible when it applies, and do not take the exception on a steeper roof.
Use plan-view area, not the sloped surface. The sloped area makes the roof look larger and the array percent look smaller. Dimension the setback on both sides of the horizontal ridge.
State checklist, not a Lynn ordinance
These pathway and ridge figures are state fire-code items used on municipal checklists. They are not a special ordinance of Lynn. The local fire prevention office can add a note on a given house. If that note arrives, cloud it on the revision and dimension what they asked for. Do not paste the Town of Weston's extra street-face rule onto a Lynn roof and treat it as local law.
The electric bill names the company
Do not guess the utility. The interconnection application goes to the company printed on the electric bill. The form follows that company, not the city line. A Lynn address by itself does not pick the form.
Ask for a current bill before the one-line is titled. If the bill is not in the folder, leave the utility name blank. A company name typed from memory may send the package to a desk that does not own the service. When the bill arrives, use that company name on the one-line and on the request.
Athol draws the one-line to match the bill. We do not file as the interconnection customer, and we do not choose a company from a map. Interconnection drawings are ready when the company on the sheet is the company on the bill, and when the equipment on the one-line is the equipment on the roof plan.
What the installer should be able to file
Permit design is that sheet set. Massachusetts solar design is where the code year and the fire-code dimensions get applied on the same drawings. A Northeast residential permit set still has to be redrawn for this reviewer. A regional template does not print the Lynn title block, and it does not know whose name is on the bill.
Boston is a different building department. Boston solar permit plans are not a Lynn sheet index. Use that page as a reminder that the city line changes the intake. Do not rename a Boston file and submit it here. If the cover still says 2023, or the pathway has no inch dimension, correct those sheets before the installer files.