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Electric Vehicle

classicT

Sawhorse
Joined
Aug 2, 2017
Messages
1,816
Location
Washington State
Interesting series of changes in the NEC (625.41).

2014
625.40 Overcurrent Protection.

Overcurrent protection for feeders and branch circuits supplying electric vehicle supply equipment shall be sized for continuous duty and shall have a rating of not less than 125 percent of the maximum load of the electric vehicle supply equipment. Where noncontinuous loads are supplied from the same feeder or branch circuit, the overcurrent device shall have a rating of not less than the sum of the noncontinuous loads plus 125 percent of the continuous loads.

2017
625.41 Overcurrent Protection.

Overcurrent protection for feeders and branch circuits supplying equipment shall be sized for continuous duty and shall have a rating of not less than 125 percent of the maximum load of the equipment. Where noncontinuous loads are supplied from the same feeder, the overcurrent device shall have a rating of not less than the sum of the noncontinuous loads plus 125 percent of the continuous loads.

2020
625.41 Overcurrent Protection.

Overcurrent protection for feeders and branch circuits supplying EVSE, including bidirectional EVSE, and WPTE shall be sized for continuous duty and shall have a rating of not less than 125 percent of the maximum load of the equipment. Where noncontinuous loads are supplied from the same feeder, the overcurrent device shall have a rating of not less than the sum of the noncontinuous loads plus 125 percent of the continuous loads.
 

Mark K

Platinum Member
Joined
May 12, 2010
Messages
1,856
Building Codes are subserviently to state law. This is especially true in California where it is established that the state has preempted the field of building regulations and that the only authority that local jurisdictions have regarding building regulations is the authority granted them by the Legislature. Thus to quote building code provisions to justify something in conflict with state law is a meaningless argument.

The question is what are the limits? The fact that manufacturers might not chose to push those limits is irrelevant.

When the state constitution states that the legislative power is vested in the Legislature what is the basis for delegating the adoption of requirements to a private entity? Note that the ability of the state to delegate the adoption of regulations, which can include building codes, to a state agency is severely limited and I am not aware of any authority they have to delegate the adoption of laws to private entities. Thus my contention that any building code provision requiring compliance with manufacturers was improperly adopted and the building official and building inspectors have no authority to enforce an invalid law.
 

Mark K

Platinum Member
Joined
May 12, 2010
Messages
1,856
What happens if instead of hardwiring the charger a receptacle is installed that is compatible with a plug on the charger. Further assume the charger is not plugged into the house wiring when the cities inspection takes place.

How is this different from the possibility that a homeowner can plug in load in excess of the capacity of a circuit breaker?
 

jar546

Chief Cook & Bottlewasher
Joined
Oct 16, 2009
Messages
8,386
Location
Palm Beach County Florida
What happens if instead of hardwiring the charger a receptacle is installed that is compatible with a plug on the charger. Further assume the charger is not plugged into the house wiring when the cities inspection takes place.

How is this different from the possibility that a homeowner can plug in load in excess of the capacity of a circuit breaker?
Easy. The receptacle is rated for a specific amperage. The wires and circuit breaker and receptacle rating all have to match. For a house, unless the design professional stated it was for a specific appliance or piece of equipment, we just inspect the circuit and away we go. Whatever they plan on plugging in is their business. They would have to modify a piece of equipment to mis-use the circuit.
 

ADAguy

Sawhorse
Joined
Sep 11, 2013
Messages
5,863
Location
California
Is this door and the switch accessible; consider at van accessible guest parking and at lots vs a residence?
 
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