Oct 12, 2001 #1 jpl5085 Electrical Jan 16, 2001 6 Can a GFCI 120V Class A (5mA) be used at 24VAC? I am using as a pass-through device for downstream protection in a control panel.
Can a GFCI 120V Class A (5mA) be used at 24VAC? I am using as a pass-through device for downstream protection in a control panel.
Oct 12, 2001 #2 busbar Electrical Apr 12, 2001 2,644 There’s a novel Leviton GFCI that may do the job. See: http://www.leviton.com/pdfs/6895gfci.pdf It needs external 120V power but the protected circuit wiring (24V in your application) passes through a molded-in current transformer. It has to be used with an external contactor to disconnect the protected circuit for a ground fault, though. Upvote 0 Downvote
There’s a novel Leviton GFCI that may do the job. See: http://www.leviton.com/pdfs/6895gfci.pdf It needs external 120V power but the protected circuit wiring (24V in your application) passes through a molded-in current transformer. It has to be used with an external contactor to disconnect the protected circuit for a ground fault, though.
Oct 12, 2001 #3 gordonl Electrical Sep 4, 2001 308 A typical GFCI uses 120V from the circuit as supply power for proper operation so you couldn't use an off the shelf residential on 24VAC. See the following for an internal schematic: http://www.codecheck.com/gfci_principal.htm Upvote 0 Downvote
A typical GFCI uses 120V from the circuit as supply power for proper operation so you couldn't use an off the shelf residential on 24VAC. See the following for an internal schematic: http://www.codecheck.com/gfci_principal.htm
