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Black 3 ft power extension cord with locking NEMA L5-30P plug and L5-30R receptacle, thick 10 AWG SJT cable, fully moulded finish

Nippon Labs

Nippon Labs 30POW-10W1-L530PR-03 computer power extension cord 3 ft 10 AWG 30A 125V NEMA L5-30P to L5-30R

SKU CH-R9XV-KZJ6R MPN 30POW-10W1-L530PR-03

Heavy-duty 10 AWG locking extension cord rated 30 A at 125 V for server power distribution

  • Connector count2
  • Connector detailsNEMA L5-30P to NEMA L5-30R
  • Conductor gauge10 AWG
  • Conductor typeSJT 10 AWG. x 3C
  • Product typePower Extension Cord
  • Product colorBlack
  • Heavy-duty 10 AWG cable supports 30 A at 125 V for demanding server racks
  • Locking NEMA L5-30P to L5-30R connectors prevent accidental disconnection of critical equipment
  • Three-foot extension adds reach without excess slack in dense cabinet layouts
  • Fully molded SJT construction resists wear and strain in high-traffic data centres
  • UL and cUL listed with RoHS-compliant materials for regulated environments

Server power extension

This Nippon Labs cord extends a NEMA L5-30 connection by three feet using 10 AWG SJT conductors rated for 30 amps at 125 volts. The locking L5-30P plug and L5-30R receptacle maintain a secure link in rack environments where vibration or cable movement could otherwise disconnect critical equipment.

Rack integration

The cord adds reach between a PDU or wall outlet and a server power supply without introducing a thinner gauge that would limit current capacity. Its fully moulded ends and UL/cUL listing satisfy data-centre safety requirements, while the 25-foot total extension allowance lets installers route cables through cable managers or overhead trays.

Sustained load behaviour

Ten-gauge copper and the SJT jacket are built for continuous 30-amp draw rather than brief peaks, so the conductors run cooler during long compute cycles. The locking mechanism prevents intermittent contact that can cause heating at the pins, making the assembly suitable for equipment that stays powered for weeks without reboot.

How it compares

Measured against everything we stock in PC & Server Extension Cords, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 83% of the 401 comparable items (median $14.99).

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Specifications

Product
Brand nameNippon Labs
Model name30POW-10W1-L530PR-03
Product typePower Extension Cord
Product colorBlack
Ports & slots
Connector count2
Connector detailsNEMA L5-30P to NEMA L5-30R
Size & build
Overall length3 ft (0.91 m)
Conductor gauge10 AWG
Conductor typeSJT 10 AWG. x 3C
Shipping weight0.16 kg
Package size127 × 51 × 51 mm

Questions about this item

What is the maximum continuous current the 10 AWG SJT conductors can carry without overheating?

The cord is rated for 30 A continuous at 125 V, and the 10 AWG SJT construction supports that load under sustained use.

Does the locking NEMA L5-30P/L5-30R connection run hotter than a standard plug after hours of operation?

The locking design maintains firm contact, so resistance stays low and the connectors do not generate extra heat during all-day server loads.

What existing power infrastructure must be in place for this 3 ft extension to work?

You need a NEMA L5-30R outlet and a device with a NEMA L5-30P plug; the cord simply bridges between them.

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