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Electrical

It Only Takes 50 Milliamps to Stop a Heart

Catch the live contact hazard before it reaches your crew

Electrical shock doesn't need high voltage to kill — a current well below what powers a light bulb can stop a heart or freeze muscles so a worker can't let go. Exposed conductors, damaged cords, missing GFCI protection, and contact with live parts injure and kill workers every year. OSHA Scan analyzes job-site photos to flag exposed energized parts, missing ground-fault protection, and shock hazards before anyone makes contact.

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Electrical Shock Exposure hazard analyzed by OSHA Scan
AI analysis preview
1
Hazard detectedSample report
1CriticalElectrical Shock Exposure

May relate to 29 CFR 1910.333

50 mA

Current that can cause cardiac arrest

#5

Electrocution among construction's 'Fatal Four'

1,000+

Electrical injuries treated in the US each year

~15s

Typical time to get scan results

What this scenario looks like

Electrical shock exposure is any situation where a worker can complete a circuit through their body — by contacting an energized conductor, a faulted tool or appliance, or an energized surface while grounded. The severity depends on current, path through the body, and duration, and even low-voltage systems can be lethal under the right conditions.

On site the hazard shows up as damaged extension cords with exposed copper, missing ground pins, receptacles without GFCI protection in wet or outdoor areas, open junction boxes and panels, temporary wiring run through doorways or standing water, and tools with cracked housings. Contact with overhead or buried lines and working on assumed-dead circuits that are still live are frequent killers.

The trap is that electricity is invisible and gives no warning — a cord or panel looks the same whether it is safe or lethal. A worker can grab an energized part and be unable to release it as muscles clamp down. That is why a photo-based check that flags exposed conductors and missing GFCI before work begins prevents so many electrocutions.

A labelled example scan for this scenario

Here is what an OSHA Scan report looks like for electrical shock exposure. It is an illustrative example built from this scenario's hazards — clearly marked, not live scan data.

Example report
Illustrative — not live scan data
Example job-site photo showing electrical shock exposure

Compliance score

46

Lower means more potential hazards found

3 potential hazards found

1 Critical1 High1 Medium
  • Electrical Shock Exposure

    Critical

    Possibly related to Selection and use of work practices (electrical) (29 CFR 1910.333)

    Observed condition: Electrical shock exposure is any situation where a worker can complete a circuit through their body — by contacting an energized conductor, a faulted tool or appliance, or an ener…

    Corrective action: Provide GFCI protection on all temporary power and in wet or outdoor areas

    High confidence

  • Electrical Shock Exposure: Wiring design and protection (construction)

    High

    Possibly related to Wiring design and protection (construction) (29 CFR 1926.404)

    Observed condition: Requires ground-fault protection (GFCI) or an assured grounding program on temporary construction power and proper grounding of equipment.

    Corrective action: Use an assured equipment grounding conductor program where GFCI is not used

    Medium confidenceNot fully clear from the photo — verify on site.

  • Electrical Shock Exposure: Wiring design and protection (general industry)

    Medium

    Possibly related to Wiring design and protection (general industry) (29 CFR 1910.304)

    Observed condition: Requires grounding, ground-fault protection, and proper wiring methods to protect workers from shock hazards.

    Corrective action: Enclose all live parts in boxes, panels, and covers

    High confidence

AI-generated analysisThese findings are potential hazards flagged by AI from a single photo. They are a starting point for your own review — not an official OSHA determination. Verify conditions on site with a qualified person before acting.

Why this scenario matters

Immediate consequences

Electrical shock causes cardiac arrest, severe burns, muscle and nerve damage, and falls triggered by the shock. Currents that seem small can be fatal within seconds.

Legal & financial impact

Electrical safety and GFCI violations are commonly cited. A serious violation runs over $16,000, willful violations exceed $160,000, and electrocution is one of OSHA's Fatal Four with intensive enforcement.

Operational impact

A shock incident stops work, triggers investigation, and often reveals systemic wiring problems that shut down areas until corrected. Downtime and claims costs mount quickly.

Industry-specific concerns

Construction, maintenance, electrical, and outdoor trades constantly use temporary power, cords, and tools in wet and dirty conditions where damaged equipment and missing GFCI create shock risk.

How OSHA Scan detects this hazard

OSHA Scan uses an AI vision model to spot shock hazards. Upload a photo of your work area and it identifies exposed conductors, damaged cords, open panels and boxes, and missing GFCI protection in wet or outdoor settings, flags each hazard with a severity rating, and cites the OSHA standard it may relate to — before anyone makes contact.

Analyze your first photo free
OSHA Scan analyzing Electrical Shock Exposure
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1
Hazard found
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Scan a photo for electrical shock exposure now

Upload a real job-site photo and OSHA Scan detects visible hazards in seconds — no account needed to run your first scan.

  • A flagged list of shock hazards — exposed conductors, damaged cords, missing GFCI
  • The OSHA standard each finding may relate to, such as 1926.404 for GFCI protection
  • A scored, dated report with a manual-verify list, downloadable as PDF or Excel
Live OSHA hazard analysis
Free instant AI scan
Photo scan — no account neededVideo walkthrough scan — free account
1Upload photo
2AI analysis
3See report

Use the real site or facility name. If you save the scan after signup, it becomes the report name.

Three angles, one deeper scan

Only the wide shot is required — every extra angle gives the AI more places to look.

Required: Set the scene — one wide shot lets the AI sweep the whole area at once

Stand at the entry point and capture corner to corner: floors, ladders, scaffolds, and everyone at work

or choose from your library

Drop a job-site photo or walkthrough video

Click to upload, drag & drop, or snap a photo on site. Photos scan free in about 15 seconds — no signup, no card. Video walkthroughs (up to 3 min) run on a free account.

Results in ~15sReferences relevant OSHA standardsPrivate - deleted in 48h unless you save it

Accuracy boosters

Small habits, sharper scans

1

Set the scene

Start with context

Fill the frame

2–3 ft for close-ups; keep ladders, cords and workers fully in view.

2

Capture clearly

Make the frame usable

Light it right

Keep the sun or lights behind you — glare and shadows hide hazards.

Tap to focus

Tap the hazard on screen and hold still one second — blur can't be flagged.

3

Choose the useful view

Give the AI room to understand

Go landscape

Turn your phone sideways — a wider frame catches more of the scene.

No job-site photo handy?
or scan with video

Only upload photos you have permission to use, and avoid images showing personal, customer, or confidential information. Demo photos and results are held privately for up to 48 hours so you can save them to a free account; unclaimed photos are deleted automatically. Results are an AI-assisted preliminary review, not an official OSHA determination.

New: Video walkthrough scans

Record up to 3 minutes of your site — the AI extracts frames and flags every hazard with exact timestamps. Free account required.

Try it free →

Get the best results

Wide shot first

Stand at the entrance and photograph the entire work area so AI sees the full context

Hazard areas

Photograph elevated surfaces, equipment, electrical panels, and anywhere workers are active

Close-ups last

Move in close on anything damaged, missing, or that looks risky — the AI catches more detail

Print a safety sign for "Electrical Shock Exposure"

Download a free, print-ready poster with a QR code your crew scans on-site to run an instant AI safety check.

Real incident case study

A damaged cord powering a saw in a wet area

The situation

A carpenter plugged a circular saw into an extension cord whose outer jacket was split, exposing the conductors near the plug. The cord ran across a slab that had been hosed down that morning, and the receptacle had no GFCI protection.

What went wrong

As he adjusted his grip, his hand contacted the exposed conductors while standing in the damp area. Current passed through his body to ground; without GFCI protection nothing interrupted the fault, and he suffered a severe shock and fell, breaking his wrist.

How OSHA Scan would have prevented it

A single photo of the setup run through OSHA Scan would have flagged the damaged cord and the missing GFCI in a wet location as critical shock hazards, cited 29 CFR 1910.333, and prompted the crew to remove the damaged cord and use GFCI-protected temporary power before energizing the saw.

Lessons learned

Damaged cords and missing GFCI in wet areas are a lethal combination. Inspect every cord and use GFCI protection wherever moisture is present — a fast photo scan confirms the setup is safe before work starts.

Prevention best practices

Layered controls, from most to least effective.

Engineering controls

Interrupt faults and keep energized parts out of reach.

  • Provide GFCI protection on all temporary power and in wet or outdoor areas
  • Use an assured equipment grounding conductor program where GFCI is not used
  • Enclose all live parts in boxes, panels, and covers
  • Maintain effective grounding and bonding on tools and equipment
  • De-energize and lock out circuits before working on them

Administrative controls

Enforce inspection and verification before contact.

  • Inspect cords, tools, and equipment before each use and remove damaged items
  • Test circuits to verify they are de-energized before working — never assume
  • Keep temporary wiring out of walkways, doorways, and standing water
  • Maintain safe approach distances from overhead and buried lines
  • Use only qualified workers for work on or near energized parts

Personal protective equipment

Protection when working on or near electrical hazards.

  • Voltage-rated insulating gloves with leather protectors for live-part work
  • Insulated tools rated for the voltage involved
  • Dielectric footwear and dry, non-conductive clothing
  • Eye and face protection where arcing or sparks are possible

OSHA compliance & citations

The federal standards this hazard may relate to.

29 CFR 1910.333

Selection and use of work practices (electrical)

Requires de-energizing and verifying circuits before work and safe practices to protect workers from shock and electrocution when contact with live parts is possible.

Up to $16,550 per serious violation; $165,514 for willful or repeat

29 CFR 1926.404

Wiring design and protection (construction)

Requires ground-fault protection (GFCI) or an assured grounding program on temporary construction power and proper grounding of equipment.

Up to $16,550 per serious violation

29 CFR 1910.304

Wiring design and protection (general industry)

Requires grounding, ground-fault protection, and proper wiring methods to protect workers from shock hazards.

Up to $16,550 per serious violation

Incident response protocol

If an incident occurs, act fast and in order.

Immediate actions (first 5 minutes)

  1. 1Do NOT touch the victim until the power is off — you can become a second victim
  2. 2De-energize the source or disconnect power if it can be done safely
  3. 3Call 911 immediately
  4. 4Begin CPR if trained and the victim has no pulse
  5. 5Assign someone to direct emergency responders to the location

Emergency response (5-30 minutes)

  1. 1Cooperate fully with arriving emergency responders
  2. 2Keep the circuit de-energized and locked out for investigators
  3. 3Account for all workers and check for fire from the fault
  4. 4Explain clearly how the shock occurred
  5. 5Photograph the equipment and wiring once responders allow

Post-incident

  1. 1Notify OSHA within 8 hours for a fatality, or 24 hours for a hospitalization
  2. 2Launch an incident investigation within 24 hours
  3. 3Preserve the cords, tools, and wiring involved as evidence
  4. 4Interview witnesses while details are fresh
  5. 5Correct wiring deficiencies and retrain the crew before resuming

Team training module

Workers will understand how electrical shock injures and kills, recognize exposed conductors and missing protection, and verify de-energization and GFCI use before electrical work.

Train before electrical or temporary-power work, refresh annually, and reinforce with a toolbox talk each shift using real photos of safe and hazardous setups.

Training topics

  • How electrical shock and electrocution occur
  • Current levels and their effects on the body
  • GFCI protection and when it is required
  • Inspecting cords, tools, and equipment
  • Verifying circuits are de-energized before work
  • Grounding and bonding fundamentals
  • Hazards of water and wet locations
  • Safe approach distances from power lines
  • Emergency response and rescue without becoming a victim
  • OSHA electrical requirements and penalties

Compliance checklist

Run these checks to stay ahead of citations.

Daily pre-work inspection

  • All cords and tools inspected; damaged items removed from service
  • GFCI protection present on temporary power and wet areas
  • All live parts enclosed in boxes, panels, and covers
  • Circuits verified de-energized and locked out before work
  • Grounding pins intact and equipment properly grounded
  • Temporary wiring clear of walkways and standing water
  • Safe distances maintained from overhead and buried lines
  • Qualified workers assigned to energized-adjacent tasks

Unlock the full Electrical Shock Exposure checklist

10 more checklist points are waiting. Register with your email to reveal every item and download the complete OSHA compliance checklist as a printable PDF. Free, and it only takes a few seconds.

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Frequently asked questions

How much current is dangerous to a person?

Very little. Around 10 mA can cause a worker to lose muscle control and be unable to let go, and roughly 50 mA through the chest can cause cardiac arrest. Even low-voltage systems can deliver lethal current.

What is GFCI protection and when is it required?

A ground-fault circuit interrupter senses current leaking to ground and cuts power in milliseconds. OSHA requires GFCI protection on temporary construction power and in wet or outdoor locations (29 CFR 1926.404).

Why can't I just assume a circuit is dead?

Circuits are often mislabeled, back-fed, or energized by another source. OSHA requires testing to verify a circuit is de-energized and applying lockout/tagout before working on it — never assume it is dead.

What makes damaged extension cords so dangerous?

A split jacket or missing ground pin can energize the cord's exposed conductors or leave a faulted tool ungrounded, so a worker contacting it completes a circuit to ground. Damaged cords must be removed from service.

Why is water so dangerous around electricity?

Water lowers skin resistance and provides a conductive path to ground, so a shock that might be survivable when dry can become lethal. GFCI protection is essential wherever moisture is present.

What is 'can't let go' current?

At currents around 10-20 mA, involuntary muscle contraction can prevent a worker from releasing an energized part, prolonging contact and greatly increasing the chance of a fatal shock.

What are the OSHA penalties for electrical shock hazards?

A serious violation can cost over $16,000, and willful or repeat violations can exceed $165,000 per instance. Electrocution is part of OSHA's Fatal Four and draws intensive enforcement.

How accurate is OSHA Scan at detecting shock hazards?

OSHA Scan flags shock hazards. It identifies exposed conductors, damaged cords, and missing GFCI, returning the location and OSHA citation.

Protect your crew from electrical shock today

Platform Capabilities

One practical command center for safer work

Review findings, organize chemical records, and open relevant official resources for your saved locations and work context.

Human-in-the-loop review

You make the final call. Review, edit, or dismiss any AI-flagged hazard before finalizing your inspection report.

SDS modernization drafts

Scan chemical labels or upload legacy MSDS sheets to create structured drafts that support your team's search for and review of current official manufacturer Safety Data Sheets.

Contextual official resources

Open official OSHA and State Plan guidance, required posters, emergency contacts, and relevant publications for saved locations and work requirements.

What the AI can and can't detect

OSHA Scan reads a single photo. That makes it fast and easy for anyone on site — but it also means it has real limits. Here's an honest look at both.

What it can catch from a photo

  • Missing or incorrect PPE that is visible in the frame
  • Unprotected edges, open holes, and visible fall hazards
  • Housekeeping, trip, and blocked walkway or exit hazards
  • Visible electrical, struck-by, and equipment-guarding hazards

What a photo can't tell it

  • Hazards hidden from view or anything outside the photo
  • Exact heights, distances, weights, or measurements
  • Training records, procedures, or how equipment is actually used
  • Full legal compliance or an official OSHA pass/fail determination
OSHA Scan gives an AI-assisted preliminary review from a photo. It does not replace an on-site inspection by a qualified safety professional, and a compliance score is not an official OSHA determination.

Reviewed by OSHA Scan Editorial

Last updated August 29, 2026

This content is produced by the OSHA Scan Editorial team and reviewed with AI assistance. It is general safety information, not legal or compliance advice. OSHA Scan is an independent tool and is not affiliated with, endorsed by, or certified by OSHA or the U.S. Department of Labor.

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