Greetings all I am doing some load calcs for 'Transport Refrigerated Unit' (TRU) receptacles for the international standard pin and sleeve 390 - 480 volt 50/60 HZ 30/32amp volt 4 wire receptacles they use.
I was looking at article 626 for guidance getting a standard load per receptacle as there are literally be dozens of different types of these container units.
I see article 626 defines an Electrified Truck Parking Space:
And it defines a
TRU
Is the code making a distinction between 'vehicles' and 'trailer or containers' there?
For example say I have a space has the two-three required receptacles for the drivers vehicle per 626.24(B)
and a 480V 30A 3-pole, 4-wire grounding type pin and sleeve to a TRU.
Per 626.11(A) is this all one 'space' so the minimum load is 11kW per space?
The new sentence in the FPN in 626.11(B) has me thinking no, its 11kw for just the cab or vehicle.
But then that kinda leaves the VA of the TRU up in the air.
And it could be argued that the vehicle includes the trailer or container.
Thanks in advance.
I was looking at article 626 for guidance getting a standard load per receptacle as there are literally be dozens of different types of these container units.
I see article 626 defines an Electrified Truck Parking Space:
Electrified Truck Parking Space. A truck parking space that
has been provided with an electrical system that allows truck
operators to connect their vehicles while stopped and to use
off-board power sources in order to operate on-board systems
such as air conditioning, heating, and appliances, without any
engine idling.
And it defines a
TRU
Transport Refrigerated Unit (TRU). A trailer or container,
with integrated cooling or heating, or both, used for the purpose
of maintaining the desired environment of temperature-sensitive
goods or products.
Is the code making a distinction between 'vehicles' and 'trailer or containers' there?
For example say I have a space has the two-three required receptacles for the drivers vehicle per 626.24(B)
and a 480V 30A 3-pole, 4-wire grounding type pin and sleeve to a TRU.
Per 626.11(A) is this all one 'space' so the minimum load is 11kW per space?
The new sentence in the FPN in 626.11(B) has me thinking no, its 11kw for just the cab or vehicle.
But then that kinda leaves the VA of the TRU up in the air.
And it could be argued that the vehicle includes the trailer or container.
Thanks in advance.
Last edited: