MOV Protection

Discussion in 'General Electronics Chat' started by alain, Jul 20, 2009.

  1. alain

    Thread Starter New Member

    Jul 20, 2009
    Hi building an output box for a greenhouse controller and i was wondering

    what type of protection is required (ex: MOV, snubber circuit ect..).

    basically i have a metal box with 12x relay 30A 120VAC, and a control

    section (PIC, rs485, XBEE_PRO). Since the relay support 30A but they

    will have a MAX 15A current running throu them i will need one 2 x 14gauge

    wire per output bringing 120VAC inside the box. So my question is

    what should i put for protection at the input and what should i put for

    protection at the appliance socket output, is a MOV at input and a snubber

    at the appliance socket good enough? Thanks a lot ! Alain Clarke