Trash Compactor Power Requirements at a Glance#
A trash compactor sits idle until its motor drives a ram down to crush the load, a brief burst that spikes current for only a few seconds. A built-in draws 6 to 8 amps on 120 volts; a freestanding model 8 to 10 amps. Both ride a standard 15-to-20-amp branch through a 5-15R outlet. The table above lists both.
Trash Compactor Electrical Specifications#
| Configuration | Voltage | Amps | Watts (max load) | Breaker | Outlet (NEMA) |
|---|---|---|---|---|---|
| Built-in 1/3 HP trash compactor | 120 V | 6–8 A | 700–960 W | 15 A | 5-15R |
| Freestanding or convertible trash compactor | 120 V | 8–10 A | 960–1,200 W | 15–20 A | 5-15R |
A compactor sits idle until its motor drives a ram down to crush a drawer of refuse, a brief heavy push that spikes the current for only a few seconds at a time. Because that jolt is short and infrequent the unit rides a standard kitchen branch, plugging into a switch-controlled outlet inside the sink cabinet or wiring straight to a wall switch.
Do You Have the Right Tools?
Multimeter ($85), vacuum pump ($250), diagnostic software, and specialized hand tools. Our technician arrives with $3,000+ in professional tools — your diagnostic is free.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Circuit and Breaker Sizing for the Trash Compactor#
Because the heavy draw is short and infrequent, the circuit stays modest. A built-in compactor at 6 to 8 amps lives on a standard 15-amp branch, while a freestanding or convertible model at 8 to 10 amps may prefer a 20-amp circuit if it shares the run with other loads. The ram motor's crush is a brief spike, not a continuous pull, so it does not demand the dedicated heavy feed a constant load would — 14-gauge copper on a 15-amp branch handles the built-in comfortably.
Installation and Safety Notes for Trash Compactor Wiring#
A compactor connects one of two ways: a built-in often wires to a switch-controlled outlet inside the sink cabinet so a wall switch runs it, while a convertible model simply plugs into a standard 5-15R receptacle. Match the cord and the switch to the branch, and confirm the outlet is grounded. Because the cabinet is a wet under-sink zone shared with the disposal, protection against ground faults may apply per local code. Adding a switched outlet or a new branch is permit-and-inspection work; a licensed electrician sorts a switched-receptacle setup quickly if the cabinet does not already have one.
Senior Gas Appliance Specialist · 18 years experience
AGA-certified gas appliance specialist with 18 years of experience in residential and commercial oven, range, and cooktop repairs.
