transformer above accoustic ceiling

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pete25

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My question is this :

I have a 45kva transformer to be installed above a suspended ceiling with accoustic tiles. Can I install the primary disconnect next to the transformer above the suspended ceiling as well?
 
Transformers are not required to have a disconnecting means within sight.

The primary overcurrent device is not required to be within sight of the transformer.

Chris
 
raider1 said:
Transformers are not required to have a disconnecting means within sight.

The primary overcurrent device is not required to be within sight of the transformer.

Chris
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If OP wanted to...


404.8 Accessibility and Grouping.
(A) Location. All switches and circuit breakers used as switches shall be located so that they may be operated from a readily accessible place. They shall be installed such that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than 2.0 m (6 ft 7 in.) above the floor or working platform.
Exception No. 2: Switches and circuit breakers installed adjacent to motors, appliances, or other equipment that they supply shall be permitted to be located higher than 2.0 m (6 ft 7 in.) and to be accessible by portable means.
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raider1 said:
True, but there will have to be a transformer primary feeder overcurrent device which would probably be located in a panelboard or switchboard, so why have another OCPD located above the suspended ceiling?

Chris
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Do I look like a designer?:smile:
 
Chris however, I have 2 480V Condensing units up on the roof that will be tapped off of the primary of the transformer. However, I do not have sufficient room to install two OCPD for my taps to the condensing units along the wall next to my two 208/120V panels therefore, I am proposing on tapping off my incoming feeders via a wireway to an adjacent OCPD and thru the roof and to my units. However, I need to know if I can do all this (install the wireway and OCPD for the taps) above the suspended ceiling (accoustic tiles).
 
pete25 said:
Chris however, I have 2 480V Condensing units up on the roof that will be tapped off of the primary of the transformer. However, I do not have sufficient room to install two OCPD for my taps to the condensing units along the wall next to my two 208/120V panels therefore, I am proposing on tapping off my incoming feeders via a wireway to an adjacent OCPD and thru the roof and to my units. However, I need to know if I can do all this (install the wireway and OCPD for the taps) above the suspended ceiling (accoustic tiles).
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My opinion is that the two OCPD for the taps must be readily accessible and not located above the suspended ceiling. 240.24(A) requires the OCPD's to be readily accessible.

I don't feel that any of the 4 conditions listed in 240.24(A) apply to your situation.

Chris
 
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