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How to specify
a Transformer
Check List.
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Do
I need a hardwire or plug in style transformer? Will it be mounted
to an electrical box 1/2" knock out, or plugged into wall recepticale? |
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What voltage
is the device rated, for operation? |
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What current
AC or DC is the device on your circuit (i.e. electric strike, door
bell)? |
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What is the
current amperage draw for the device load, (i.e. 1. amp or .1 ma,
one hundred thousandths of an amp) ma = miliamps = 1/1000 = one thousand
miliamps, .001 |
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If you do
not know the amperage drawa, do you know the VA rating of existing
transformer |
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Do I require
an internally fused transformer? Only available in plug-in types. |
1. Voltage X Amperage = VA
2. VA / Voltage = Amperage
3. VA / Amperage = Volts
4. Voltage / (ohms) = Amperage
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