Working space is required in front of a floor mounted transformer, but are there are working space requirements for the sides of the transformer? There's 6" ventilation requirement as per the manufacturer, so does this mean I can place the back of a transformer 6" from a wall and place the side of the transformer 6" off a wall as well?
Transformer clearance / working space
- Thread starter cppoly
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ron
Senior Member
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- New York, 40.7514,-73.9925
Generally yes.
ptonsparky
Tom
- Occupation
- EC - retired
Generally, No.
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Opinions vary on whether transformers require the working space in 110.26(A)(1)
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- New Jersey
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- Journeyman Electrician (retired)
Why are you thinking that you would need working space on the side of a transformer? As Jumper stated there are opinions that 110.26 doesn't apply at all to a transformer installations.
For maintenance possibly. Once the transformer is installed in the corner of a room and its back and side are right off the wall, I assume it makes it impossible to work on the secondary side with 6" of clearance. If primary and secondary conductors never need to be worked on, then I can see why you don't need the clearance on the sides. I guess it's not defined in the code
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