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I have a 24VAC 50-60Hz solenoid valve that has a power consumption of 125VA (Pull in) and 12VA (Hold in). This is connected to the output of a 230v to 24VAC transformer, however the secondary side of the transformer has two 75VA rated power outputs and the solenoid valve is only connected in series with one of these.

My knowledge is more in electronics and so I'm just wondering why this has been done, because I feel that the wiring from the transformer should be connected to both outputs in order to provide sufficient power to the solenoid valve to account for the initial pull-in.

Although the pull-in is only for a fraction of a second, wouldn't the initial contacts of the solenoid valve struggle to close if the power rating is reduced from what is specified in the data sheet and therefore the valve would struggle to shut. This doesn't seem to be the case though as the system appears to work fine.
 
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