LG W196BC Owner's Manual page 16

Circuit Breaker Installation and Parts for Installation
Read thoroughly and follow all directions provided.
A circuit breaker must be installed between the power source and the unit if the plug is not used
(see illustration below).
Main Power source
Circuit Breaker
Use a circuit breaker
or time delay.
Use 20A circuit breaker for some models
NOTICE
(21k ~ 26k Btu/h).
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