Tripp Lite 2ft Power Cord Extension Cable L5-30P To L5-20R With Amp Break Heavy Duty 20A 10AWG 2Tripp Lites P043 002 allows a simple transition from a L5 30R wall outlet to a L5 20R outlet. No need to call in an electrician to change the outlet and breaker, simply plug in the L5 30P plug and convert to L5 20R outlet with a built in 20AMP breaker. Heavy duty metal box, 3 x 10AWG and UL rated. Conversion box includes 20AMP breaker. Easy transition from L5 30R wall outlet to L5 20R.