For many years, my company has installed on/off SPST toggle switches in the conduit box(peckerhead) of 115V motors up to 1 hp with no reported failures. A man in our shop says there is a code stating that 1 hp is the limit for this configuration. In the past, when we went above 1 hp, we have gone to a manual motor starter in a separate box. Does anyone know if there is such a code regarding the 1 hp limit for putting a toggle switch in the motor conduit box?
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