I am looking at a normal house hold timer that people mainly us on Lights and it has 15 amps on it. 15 amps X 120 Volts = 1800 watts
and on the timer it has 1875W (watts?).

Any way the electrical info will be on the timer. However, the timer is made for inside of the house not outside.

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84 300D, 82 Volvo 244Gl Diesel