Electrical

100+ products

Expected delivery: Wed, Nov 18

Electrical supplies for plant maintenance, facility upkeep, fleet upfits and contractor installs: wire and cable, connectors and terminals, switches and outlets, boxes, conduit and strut, breakers, fuses and controls, cords and power strips, cable ties and testers and meters. Maintenance techs, electricians and purchasing agents use this section to restock the parts that get used every week.

How to choose electrical supplies

  • Match the rating. Voltage and amperage ratings on devices, cords, breakers and fuses should match what the equipment or the drawings call for. Never put in a larger fuse or breaker to stop a device from tripping.
  • Know the wire type. Gauge (AWG), copper or aluminum, insulation type and temperature rating all matter. The size a circuit needs is set by code and the load, so confirm it with the electrician on the job. See wire and cable.
  • Check the location. Damp, wet, outdoor and corrosive areas call for parts rated for them, such as NEMA-rated enclosures, weatherproof covers and liquidtight fittings.
  • Pair terminals with the right tool. Insulated crimp terminals are color coded by wire range, and a crimp made with the wrong die can pull loose. Compare options under connectors and terminals.
  • Use a meter rated for the job. Look at the CAT rating and voltage rating on any tester or multimeter, and follow NFPA 70E and your site's electrical safety program.

Electrical work should be done by a qualified person and installed to the National Electrical Code and local code. Follow the manufacturer's instructions and OSHA requirements for every product.

Fleet and upfit shops can see our police light installation and shop supplies line cards for butt connectors, heat shrink and installation hardware. If you buy for a building or a maintenance crew, a business account lets you order online on approved terms, and we can quote reels of wire or project quantities through our quote request.

Common questions

What is the difference between THHN wire and SO cord?

THHN is single conductor building wire meant to be installed in conduit or another raceway as code allows. SO cord is a flexible, jacketed multi-conductor cord used for extension cords and portable or movable equipment.

What do the colors on crimp connectors mean?

The color shows the wire range. Red insulated terminals are commonly for about 22 to 16 AWG, blue for 16 to 14 AWG and yellow for 12 to 10 AWG. Always check the range printed on the package.

Can a company set up an account for electrical supplies?

Yes. Businesses can apply for an account with approved terms, order online and pay by card or ACH. Apply on our business accounts page.

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