Every breaker, feeder and transformer on your one-line, checked.

Upload the drawing set as PDFs. SideRiser finds the one-lines and risers, lists every component, checks each one against the NEC and your firm's standards, and marks up what's wrong, what's missing and what to confirm, in minutes.

Review a diagram freeSee a sample report

100 drawing pages free when you sign up. No card needed.

Three findings from a real review, marked up the way you'd mark a check print: yellow is verified, red needs fixing.

Findings you can act on, with the numbers behind them

From a review of a 77-component one-line. Each finding names the equipment involved, compares the values, cites the code section or company rule, and says what to change.

  1. Finding 1

    Error, Rule 4; NEC 450.3(B), 240.21(C)

    T-HV has no primary or secondary overcurrent protection

    Fix: Show a 150A/3P primary breaker in MPH-LS and a 225A secondary OCP (MPL-LL main or a disconnect)

    Rule 4 for 75 kVA calls for a 150A primary OCP and a 225A secondary OCP. The drawing shows no breaker in MPH-LS for 3#1/0 to T-HV, and no device between T-HV and MPL-LL (4#4/0, 1#2G). As drawn, neither the transformer nor its secondary conductors are protected.

  2. Finding 2

    Error, Rule 4

    T-AV secondary EGC #4 smaller than Rule 4 #2

    Fix: Upsize both T-AV secondary EGCs to #2

    Rule 4 for the 75 kVA secondary: 4#4/0, #2 G, 2-1/2"C. Both secondary callouts show 1#4G. #4 meets NEC 250.122 for 225A, but the rule is stricter and governs.

  3. Finding 9

    Missing information, NEC 250.66

    Service grounding electrode conductor size not shown

    Fix: Size the MSB GEC and bonding jumper (5 sets 500kcmil Cu -> 3/0 Cu min)

    A grounding electrode is drawn at the MSB but has no conductor callout. The separately derived systems give theirs (#3/0, #2). For 2500kcmil of Cu service conductors, Table 250.66 requires at least 3/0 Cu.

  4. Finding 12

    Confirm with the engineer, NEC 110.9, 110.10

    42kAIC RTU disconnects fed from 200kAIC switchboard

    Fix: Provide available fault current at the RTUs, or a series rating, showing 42kAIC is adequate

    The MSB is rated 200kAIC, which implies high available fault current. The RTU fused disconnects are 42kAIC. Available fault current isn't given on the drawing, so adequacy can't be verified.

Read all 13 findings in the sample report

From PDF to review in about four minutes

No CAD plugin and no export step. If you can print it to PDF, SideRiser can read it, including the text layer, line weights and the legend.

  1. 1

    Upload the drawing set

    One combined PDF or a file per sheet. The reviewer finds the one-lines and risers and reads the legends and schedules; skip any pages it doesn't need.

  2. 2

    Add your standards

    Set your firm's design rules once for every project, and add a project's own requirements on top. Leave them out and the review checks against the NEC and sound practice.

  3. 3

    Work through the review

    Findings sorted into errors, missing information and items to confirm, plus the full component inventory with what feeds what.

What every review checks

The review traces the system from the service down: each source, each piece of equipment and each feeder, and what connects to what. Then it checks every one.

When information it needs isn't on the drawing, such as available fault current or feeder lengths, it says so instead of guessing.

Overcurrent protection

  • Breaker and fuse sizes against conductor ampacityNEC 240.4
  • Transformer primary and secondary protectionNEC 450.3
  • Feeder tap and transformer secondary conductorsNEC 240.21
  • Ground-fault protection on 1000A and larger servicesNEC 230.95

Conductors and grounding

  • Equipment grounding conductor sizeNEC 250.122
  • Grounding electrode conductors and bonding jumpersNEC 250.66
  • Parallel sets, neutrals and conduit fill as drawn
  • Callouts that disagree for the same circuit

Equipment ratings

  • Bus rating at least the main or upstream device
  • Interrupting ratings against the equipment upstreamNEC 110.9
  • Main breaker or main lugs stated on every panel
  • Poles and wires against the panel's voltage and phase

Completeness

  • Equipment drawn without ratings
  • New, existing and relocated scope read from the legend
  • References to sheets that weren't provided
  • Fault current, lengths and impedances needed for a full check

Your firm's standards, applied as written

Paste your design rules: bus sizes, breaker frames, feeder schedules, transformer tables. Every review applies them by rule number and flags where the drawing departs from them, even when the drawing still meets code.

From the company rules

Rule 4, 75 kVA transformer secondary: 4#4/0, #2 G, 2-1/2"C

Error, Rule 4

T-AV secondary EGC #4 smaller than Rule 4 #2

Rule 4 for the 75 kVA secondary: 4#4/0, #2 G, 2-1/2"C. Both secondary callouts show 1#4G. #4 meets NEC 250.122 for 225A, but the rule is stricter and governs.

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One credit per drawing page

Start with 100 free credits. Skip the pages a review doesn't need before you start, your standards and reference files are free, and if a review fails the credits come back automatically.

Free

Try it on a real drawing.

$0

  • 100 credits to start
  • One-line and riser diagrams
  • Your firm's design rules
Start free

Starter

For an engineer checking their own drawings before they go out.

$19 a month

  • 20 drawing pages a month
  • One-line and riser diagrams
  • Your firm's design rules
  • Email support

Pro

Most popular

For a team that reviews every set before it's issued.

$49 a month

  • 50 drawing pages a month
  • One-line and riser diagrams
  • Your firm's design rules
  • Priority email support

Expert

For firms putting a high volume of drawings through QA.

$99 a month

  • 100 drawing pages a month
  • One-line and riser diagrams
  • Your firm's design rules
  • Same-day support

Questions

Does SideRiser replace the engineer of record?

No. It's a second set of eyes before a set goes out. It doesn't certify compliance or stamp anything, and like any reviewer it can miss things. Every finding shows its reasoning so you can check it quickly.

What drawings does it work with?

Electrical one-line and riser diagrams as PDFs. Drawings exported from CAD, with a text layer, give the best results. Scanned sheets are read visually and are slower and less certain; the review tells you which parts it couldn't read.

Which code edition does it check against?

Reviews reference the NEC. If your jurisdiction has adopted a specific edition or local amendments, add them to your design standards (for the workspace, or one project) and the review applies them.

Do I have to pick out the right sheets?

No. Upload the whole set and the reviewer finds the one-lines and risers itself, reading the legend, notes and panel schedules for context. Each page is listed with a best guess at what it is, so you can skip floor plans and other pages before you start; you're charged for the pages you leave in.

How long does a review take?

A few minutes for a typical sheet. The sample one-line, with 77 components, took about four.

What happens if a review fails?

You get the credits back automatically, and you can run it again.