Will a device work if i have less than the required voltage...
[From: ] [author: ] [Date: 11-10-24] [Hit: ]
-If the solenoid is getting its 20 amps via the snap switch then the snap switch needs to have a higher rating, or you will have to add a 20 amp relay and drive the relay coil with the switch. In the case of a switch, the amp rating is the maximum current. Switches dont drawcurrent, they just connect sources to loads.......
The other thing is that the solenoid draws too much current. You need to select a different one. When I Googled 12 volt solenoid I found one with a current draw of one amp.
You may want to address protection of the wiring from the battery to your switch and from the switch to the solenoid. It would be unfortunate for the wiring to short out before the fire is extinguished find these cables on the Internet.
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If the solenoid is getting its 20 amps via the snap switch then the snap switch needs to have a higher rating, or you will have to add a 20 amp relay and drive the relay coil with the switch. In the case of a switch, the amp rating is the maximum current. Switches don't "draw"current, they just connect sources to loads.
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Switch does not draw power, 10A is its maximum contact current rate it can handle before the contacts burn out due to over current.
Power a 20A solenoid in series with a 10A switch result switch inside contacts burn within minutes.
You should buy 30A switch to handle 20A current draws by the solenoid. Because the start up current could go up to peak 30A. Switch can be chosen any higher voltage rate like 120V or 250V either on AC or DC power. They are much better and prevent electric leakage than switch rated 14V DC .
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I think maybe you have a misconception about way parts are designated. Typically the current value is a limit (a maximum) and not what they normally operate at.
I think one thing I might do is put a fuse in-line with each sensor.
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A fully charged healthy car battery should have a terminal voltage between 13.8V and 14.4V.
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You need to stop and review what the ratings actually mean.
If the solenoid valve draws 20 A when connected to a 12 V supply, then that is what the cables and switches operating it need to be able to carry safely.
The ratings for a switch are normally the maximum voltage and current which the switch can safely deal with. 14vdc @ 10A suggests that the switch will operate safely and reliably with voltages up to 14 V and will safely and reliably switch currents UP TO 10 A
Using a switch rated at 10 A to control a 20 A load is certainly bad design.
It sounds more like a fire creation system rather than a fire suppression system. :)
Have you considered using a relay to switch the solenoid valve?
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