Noncoincidental Loads

[bphgravity]

422.12 of the 2005 NEC has a new exception. This exception permits the a/c ad the central heating system to share the same branch circuit. This makes some sense in the fact that these are noncoincidental loads and branch circuit overloading cannot occur.

Does this new allowance idicate that other noncoincidental loads not exactly specified in the NEC can be wired in this same manner.

Also, would installing a mechanism such as a switch that pervents loads from being coincidental be permitted so that one branch circuit serves two loads that individually do not exceed the circuit rating but together would?

 

[iwire]

Re: Noncoincidental Loads

Bryan

would installing a mechanism such as a switch that prevents loads from being coincidental be permitted so that one branch circuit serves two loads that individually do not exceed the circuit rating but together would?

IMO 210.23 already allows that.

210.23 Permissible Loads.
In no case shall the load exceed the branch-circuit ampere rating. An individual branch circuit shall be permitted to supply any load for which it is rated. A branch circuit supplying two or more outlets or receptacles shall supply only the loads specified according to its size as specified in 210.23(A) through (D) and as summarized in 210.24 and Table 210.24.

If you have a mechanism that will maintain the load to less than that of that of the branch circuit IMO you are in compliance.

The new exception was only needed as 422.12 called for an individual branch circuit.

JMO, Bob

 

[physis]

Re: Noncoincidental Loads

If you have a mechanism that will maintain the load to less than that of that of the branch circuit IMO you are in compliance.

I'm not sure if I'm being sarcastic or not but wouldn't the breaker do that?

 

[benaround]

Re: Noncoincidental Loads

No, but a threeway switch would.