Brewing with 240V

[BAF]

A 30 amp outlet on a 40 amp circuit is still against code even if a welder is plugged in. Probably nothing will happen, I'm just pointing out that it is against code. To each their own.

Either way, a standard 30 amp 2 pole breaker is pretty inexpensive, and if OP is buying a GFCI breaker (which they should), then they're buying a new breaker anyhow.

 

[mac_1103]

Slightly off-topic, but only slightly... am I the only one having a hard time finding AFCI breakers lately?

 

[mashdar]

1. Others are correct that 30A receptacle and downstream 30A flexible cord will be a code violation. Not the most dangerous thing ever, but not great. (Why not just run #10s if we're throwing caution to the wind? {Don't actually do that.})

2. If the heating element is nominal 120V and you attach it to 240V, you will quadruple the power output. All kinds of issues if not designed for this.

3. I would not take for granted that the 120V appliance has the requisite switches, relays, and wiring, unless mfr confirms. Most 120V gear would not switch the neutral, meaning at 240V it will be energized 24/7.

 

[doug293cz]

2. If the heating element is nominal 120V and you attach it to 240V, you will quadruple the power output. All kinds of issues if not designed for this.

3. I would not take for granted that the 120V appliance has the requisite switches, relays, and wiring, unless mfr confirms. Most 120V gear would not switch the neutral, meaning at 240V it will be energized 24/7.

The 10 gallon Anvil Foundry is designed to run on either 120 or 240 V. It has a switch for selecting the voltage, which also changes how the element is connected such that power is not quadrupled. Don't have a schematic for the wiring, so don't know if it switches what is the neutral wire for 120V.

Brew on