AC WORKS® [ASL1420PBX] 20A Locking 4-Prong L14-20 Heavy-Duty Generator Transfer Switch Inlet Box

  • $68.99 USD
  • Save $15 USD

This AC WORKS® brand transfer switch inlet box is durably constructed with heavy-duty thick metal to withstand the elements.  This inlet box contains a NEMA L14-20P, 20 Amp, 125/250 Volt 4-prong locking plug.  Included with your purchase is a 5-year limited warranty.  

Note:  12 Gauge wire is for 20 Amp, and 10 Gauge wire for 30 Amp

Please search online "Conduit Hub Accessory" for the top access port and "Electrical Conduit Accessories" for the other ports. We do not carry inlet box conduit accessories.

GE Brand and Midwest Brand raintight hubs fit the top access port. 


  • Transfer Switch Inlet Box 
  • L14-20, 20 Amp, 125/250 Volt Locking Inlet
  • 4-Prong 20 Amp Locking Inlet With cULus E237606
  • Durable Heavy-Duty Thick Metal Construction
  • Two Combination 1/2-and 3/4-inch Knockouts, 4 Combination Up to 1", and One Combination Up to 1 1/4 Inch
  • 5-year Limited Warranty 

Common Uses

  • Temporary Power
  • Emergency Power
  • Backup Power


AC WORKS® Brand Limited Warranty