"krem" wrote in message ws.com...
wrote in message
...


krem wrote:

I have a relay which is labed to be able to switch 120vac @ 1A. Will i
still be limited to 1 amp if i'm only switching 30vac?

A couple of points:
1) If your relay is really rated to *SWITCH* 1A at 120 vac,
then it can handle more at 30 vac, all other conditions being
equal.
2) A rating to switch 1A *should* limit your design to
switching less than that. It is not a good practice to
run components at their rated maximum.

Essentially, if a hobbyist has a question about a relay's
ability to handle the current in the circuit, he should use
a bigger (higher rated) relay - one *well* in excess of the
maximum expected current.
decision,


Thanks, the only reason i'm not just going out an buying the higer rated
relays is that i already have 100 of the 1A 120vac around the house and need
to use about 28 for the project i'm working on so its an expensive
proposition. Unless some one knows of a cheep source

Simple, Try one, see how hot it gets.
Relays can dissappate heat through the pins, so if you are making
your own pcb for them , try to have a lot of copper around the contact
pins.