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Hot Transformer !! #109438
08/19/03 06:29 PM
08/19/03 06:29 PM
Admin  Offline
OP
Administrator
Member
Joined: Oct 2000
Posts: 3,481
NY, USA
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This transformer was marked that it needed 6" air space front and rear.

It is heavily loaded 24/7 and the top was to hot to touch.

It was pushed back tight to the wall.

Bob (iwire)

2017 / 2014 NEC & Related Books and Study Guides
Re: Hot Transformer !! #109439
08/19/03 07:18 PM
08/19/03 07:18 PM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Understand that {economy} dry-type transformers are often rated at 150°C rise—which means the hottest part of the transformer can run 270°F above room temperature at rated load. Hence, the logic behind the labeled clearance requirement.

Re: Hot Transformer !! #109440
08/19/03 07:41 PM
08/19/03 07:41 PM
T
ThinkGood  Offline
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Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Did they at least offer you lunch?

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