Recent content by littleblackdo

I am working on transfer switch. I should not have said "send start signal to Generator". I guess it will close contacts in start circuit.

I have to "conceptually" design this for a work project and was looking for ideas prior to meeting on it. Main voltage is 480VAC, 3 phase Wye with 300A maximum. The Emergency/Alternate Source is 480VAC, 3 phase wye Generator. I was thinking of connecting the Main Source to 3 phase, 4 pole...

I am designing a transfer switch to switch main power to Generator when main power is lost. Main power is 3 phase, 480VAC and rated at 300amps. Is a contactor a good choice for this? I cannot seem to find one rated this high of power.

Are there relays which work with both AC and DC? I am design an Auto Start Control panel which will activate on a 24 VDC power signal OR loss of 120 VAC power. I am using relays to accomplish this and I am not very familiar with them. I was thinking a 24VDC relay connected to the 24 VDC...