bphgravity
Senior Member
- Location
- Florida
1. 424.19
2. New Text
3. 424.19 Disconnecting Means Means shall be provided to disconnect the heater. motor controller(s), and supplementary overcurrent protective device(s) of all fixed electric space-heating equipment from all ungrounded conductors. Where heating equipment is supplied by more than one source, the disconnecting means shall be grouped and marked. The disconnecting means specified in 429.19(A) and 424.19(B) shall have an ampere rating not less than 115 percent of the total load of the motors and the heaters.
4. There is no specification in Article 424.19 on the rating of the disconnecting means. Based on this, one could install a 30-ampere rated disconnect on a 60-ampere branch circuit and still be in compliance with the code. This new requirement would be consistant with disconnect ratings in other articles such as motors and air conditioning and refrigeration equipment.
2. New Text
3. 424.19 Disconnecting Means Means shall be provided to disconnect the heater. motor controller(s), and supplementary overcurrent protective device(s) of all fixed electric space-heating equipment from all ungrounded conductors. Where heating equipment is supplied by more than one source, the disconnecting means shall be grouped and marked. The disconnecting means specified in 429.19(A) and 424.19(B) shall have an ampere rating not less than 115 percent of the total load of the motors and the heaters.
4. There is no specification in Article 424.19 on the rating of the disconnecting means. Based on this, one could install a 30-ampere rated disconnect on a 60-ampere branch circuit and still be in compliance with the code. This new requirement would be consistant with disconnect ratings in other articles such as motors and air conditioning and refrigeration equipment.