Outdoor domestic cold storage

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Michael gurries said:
I’m running power for a 50amp outdoor domestic cold storage container, those need disconnects correct?
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If you are talking about a giant outdoor refrigerator in someone's backyard, I'm inclined to agree you would need some means to disconnect power. I don't know that the disconnecting means has to be a disconnect switch outside.
 
I have no idea what an "outdoor domestic cold storage container" is. I'm going to assume that it is one of those old ocean going storage containers with a reefer on it for it to draw 50A.

To answer your question, unless it is cord and plug connected, yes, it needs a disconnect.

-Hal
 
Bogdan-PDX said:
reason is safety concerns, a fuse protecting the motor is more safe for the motor than the OP
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??? A fuse can open, causing the motor to single phase. A breaker will open all three legs at once. But, nothing wrong with the breaker being upstream of a non-fusible disconnect.

Motors should be protected with properly sized "overloads" or other circuit opening device based on current.
 
Frank DuVal said:
??? A fuse can open, causing the motor to single phase. A breaker will open all three legs at once. But, nothing wrong with the breaker being upstream of a non-fusible disconnect.

Motors should be protected with properly sized "overloads" or other circuit opening device based on current.
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I agree properly sized overload is best way to go.

In my case I haven’t had a customer who wanted to spend an extra bucks for it.
Usually they go and want “cheapest”
properly sized fuses would blow one after another before a breaker trips, if it starts single phasing.
 
Also with single phasing. On a single service, the cooler or motor would just turn off.
Single phasing would imply in the phase systems
 
Bogdan-PDX said:
Make sure it’s fused disconnect.
Agree with above posts. Need to be fused, and with in sight disconnect switch.
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I'm also like others in this thread, little low on information format, in the original post.
So in that respect, heard term fused mentioned. Check and see if unit equipment is "TP'd" (thermally protected)..

I've in the past, having been surprised & finding some commercial ice machines w/out benefit, of the motor having thermal protection.
 
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