Dwelling basement furnace combination switch/plug brouhaha

[smallfish]

Some electrical contractors install a combination gfci protected, tamper resistant single receptacle and switch at the residential furnace location. The receptacle is used for a condensate pump and the switch is used to disconnect the furnace.

The switch handle has no on/off indication and its throw is horizontal above the receptacle.
The contractor marks on the cover plate with a magic marker the on and off directions of the throw. Is this code? Is the switch itself to be marked with an indication of on/off per 08NEC404.7?

The problem happens when the markings wear off and the homeowner is unaware if the switch is on or off or even if the gfci protected receptacle is powered up or not to supply the pump. (Most EC do not explain the operation of a gfci receptacle to the homeowner.)

Thanks.

 

[infinity]

Since this is a snap switch IMO 404.7 does not apply. However 424.21 would apply which states that the snap switch or any switch for that matter would be required to be indicating.

424.21 Switch and Circuit Breaker to Be Indicating.
Switches and circuit breakers used as disconnecting means shall be of the indicating type.

 

[Little Bill]

Some electrical contractors install a combination gfci protected, tamper resistant single receptacle and switch at the residential furnace location. The receptacle is used for a condensate pump and the switch is used to disconnect the furnace.

The switch handle has no on/off indication and its throw is horizontal above the receptacle.
The contractor marks on the cover plate with a magic marker the on and off directions of the throw. Is this code? Is the switch itself to be marked with an indication of on/off per 08NEC404.7?

The problem happens when the markings wear off and the homeowner is unaware if the switch is on or off or even if the gfci protected receptacle is powered up or not to supply the pump. (Most EC do not explain the operation of a gfci receptacle to the homeowner.)

Thanks.

I think you have already answered your question with the (in red above) code section you cited.