The wiki page for the Pi relay board has this notice in red:
[color=red]Place 2 layers of electrical tape on the top of the Arduino’s usb connector. This will prevent the relay shield from making contact. Do not operate voltage more than 35V DC.
The specification says 15A at 35V DC/ 250V AC.
Can the board be used for 250V AC, and
does it really need 2 layers of tape?
Thanks
kavi
November 27, 2015, 5:38am
2
Hi,
The specification of the relay
Maximum current rating is 15A(Maximum current the relay can tolerate)
Maximum Voltage rating is 250V AC/30VDC
But when you are using the value of current and voltage should be as per the contact rating
[color=blue]In form A (normally open contacts condition)
10A 240VAC
12A 120VAC/24VDC
[color=blue]In form B(Normally closed contacts condition)
8A 240VAC
Thanks and regards
[color=red]In form C (changeover contacts condition)(Use this rating for normal operating usage)
10A 120VAC/24VDC
7A 240VAC
2.Yes you have to use 2 layers of tape its for safety.