Outlet Placement for Compact Floor Robots: A Charging Checklist

Where should a compact floor robot charge?

A compact floor robot should charge from a dock on fixed wiring, placed where the robot can return without crossing a walkway, and on a circuit sized to carry the charger all night. Most small shops that struggle with charging miss one of four points: the dock location, the cord run, the circuit load, or the working space around the panel and dock.

Settle all four on paper before the robot arrives. Moving a dock after installation usually means a second electrician visit, and a shop that already ran a cord along the sales floor has to undo that work too. The checklist in this piece follows the order that avoids those callbacks.

How do you choose the dock location?

Choose a spot on the robot's normal overnight route, with room to approach and leave. Keep the dock out of the main aisle, away from exits, and clear of anything that gets stacked or moved during trading hours. A dock in a back corner works only if the route and the stock plan both leave that corner alone.

Walk the planned path with a tape measure and a floor plan. Mark each turn, each fixture that might shift, and each spot where a customer could stand while the robot docks. A site assessment with route mapping gives you a drawn path to check, which is far more reliable than memory of the shop floor.

Why do cords cause trouble at the dock?

OSHA interpretation letters say flexible cords and cables cannot substitute for a structure's fixed wiring unless a listed exception applies. A 2006 letter says cords used in temporary wiring may pass through doorways if they are protected from damage, yet they still cannot replace fixed wiring. A 1995 letter says cords may not run through holes in walls, ceilings or floors unless the standard specifically permits it.

A charger on a power strip stretched across a doorway is exactly the arrangement these letters push against. Put a fixed outlet close enough that no cord crosses a walkway. These are interpretation letters, not the regulation text, so the latest wording of 29 CFR 1910.305(g) should be checked before anyone quotes it on a form or in a claim.

How much load can the circuit carry?

The National Electrical Code treats a charger that runs for hours as a continuous load. According to an electrical trade article, NEC 210.20(A) calls for 125 percent sizing for continuous loads, which is the same as keeping the load to 80 percent of the breaker rating. Its example: a 20 amp breaker supports 16 amps of continuous load.

Add the charger's rated draw to everything else on that circuit, then compare the total against the 80 percent figure. One exam-prep guide also describes an 80 percent limit for cord-and-plug equipment and ties it to section 210.23, but that section number is not verified here, so the electrician should confirm it. A forum thread discusses a listed-assembly exception that may allow 100 percent loading. Sources disagree on its scope, so treat it as unresolved and do not assume it applies to your charger.

How much clear space must surround the panel and dock?

Working space in front of electrical equipment is governed by NEC 110.26, and the required depth depends on voltage and grounding. Do not rely on a single number from a forum or a vendor page. Check Table 110.26(A)(1) in the official NFPA 70 text, because secondary sources conflict on the figures.

According to an IAEI Magazine column, the working space is at least 30 inches wide or the width of the equipment, whichever is greater, and it runs up to 6.5 feet high. Keep stock, mop buckets and chemical drums out of that zone. Label the breaker so anyone on the overnight crew can find it without searching.

What belongs on the pre-arrival checklist?

Run these steps in order. Each one depends on the one before it, and skipping ahead is how shops end up with a dock on the wrong wall.

• Request the charger's rated input and charging duty from the robot vendor before the electrician scopes the circuit.
• Mark the dock footprint on the floor plan, then draw the robot's route to it.
• Have the electrician sign off the fixed-wiring route from the panel to the dock on paper before any drilling starts.
• Ask the electrician to write the breaker rating and total circuit load on the layout drawing.
• Keep a clear strip in front of the panel at all times, including during shelf resets.
• Run a supervised first charge during staffed hours, not at closing.
• Record the breaker number, the dock location and the shutoff point in the overnight shift log.

Where does a robot lease fit in this plan?

Service Robot Co. is a full-service commercial robot integrator for US businesses. We are not tied to one manufacturer, so we pick the robot that suits the floor, then handle commercial robot leasing, robot deployment and integration, training and service through a nationwide US engineer network. Robots reach your site on a 3-year lease with one fixed robot lease payment, quoted after a site assessment.

The site assessment is where a charging plan meets the building. Our team maps the route, checks the dock footprint and clearance, and notes which circuit the charger would use, then brings your electrician in where the building requires one. A dock settled before go live means fewer surprises on the first overnight run, whether the robot is a floor scrubber lease or a robot floor cleaner lease.