Heat Gain From Common Electrical Equipment

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   c cc     c Source: www.engineeringtoolbox.com



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kVA and smaller :
Watts/kVA ¦
-

kVA : 3
Watts/kVA

- ¦


kVA : 2 Watts/kVA ¦


- 2

kVA : 2
Watts/kVA larger than 2

kVA : ¦ Watts/kVA






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|ow voltage breaker
-4
Amps : ¦
Watts |ow voltage breaker
-¦

Amps : 2
Watts |ow voltage breaker 22 Amps : 6
Watts |ow voltage breaker 4

Amps : ¦

Watts |ow voltage breaker 6

Amps : ¦3
Watts |ow voltage breaker 8

Amps : ¦
Watts |ow voltage breaker ¦6

Amps : 46
Watts |ow voltage breaker 2


Amps : 6

Watts |ow voltage breaker 3


Amps : ¦¦

Watts |ow voltage breaker 4


Amps : ¦

Watts cedium voltage breaker/switch 6

Amps : ¦


Watts cedium voltage breaker/switch ¦2

Amps : ¦

Watts cedium voltage breaker/switch 2


Amps : 2


Watts cedium voltage breaker/switch 2

Amps : 2

Watts



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Section :

Watts per section |ow voltage starters size

:
Watts |ow voltage starters size
:
Watts |ow voltage starters size ¦ :
Watts |ow voltage starters size 2 : ¦

Watts |ow voltage starters size 3 : ¦3
Watts |ow voltage starters size 4 : 2

Watts |ow voltage starters size : 3

Watts |ow voltage starters size 6 : 6
Watts cedium voltage starters size 2

Amp : 4

Watts cedium voltage starters size 4

Amp : ¦3

Watts cedium voltage starters size 

Amp : ¦

Watts



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Variable frequency drive : 2 - 6% of kVA rating

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 us duct :
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¦ Watts /ft Amp Êapacitors : 2 Watts / KVAR

  
c    c Source: Duska, c., |ukes, J.,  artak, c., Drkal, F., &Hensen, J. 2

. "Trend in heat gains from office equipment", Proceedings of Indoor Êlimate of  uildings, StrbskePleso, 28 Nov - ¦ Dec, SSTP,  ratislava, p. 6 pages on ÊD.

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Source: Environmental Design, ÊI SE Guide A (|ondon:Êhartered Institution of  uilding Services Engineers) (2

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