I will be installing a couple of baseboard heaters in an attachment off of a kitchen. Right outside of this attachment is the disconnect for the AC condenser. It is fed from the main panel by a two pole 20amp breaker. The owner would never run the heaters and the A/C simultaneously. My question is what code rules would be violated by tapping off the line side of the disconnect to feed the two baseboard heaters? Other than perhaps the lugs not being rated for two conductors.