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2 votes

Running two dryers same circuit, controlled by switch

You don't need a switch to control which outlet is off/on per code. According to NEC 210.23 (C) A 30-ampere branch circuit shall be permitted to supply fixed lighting units with heavy-duty ...
Questor's user avatar
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11 votes

Running two dryers same circuit, controlled by switch

This sort of thing is common in the electric vehicle world. People will commonly retrofit their house for an EV charger and install a splitter to share the same circuit with their dryer. Either the ...
bta's user avatar
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10 votes

Running two dryers same circuit, controlled by switch

You should be able to use a 30 amp, double pole, double throw w/ center off similar to the one shown below from leviton.
JACK's user avatar
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0 votes

How can a 240V device with a single hot terminal be wired with two 120v hot wires?

The US system is actually very flexible. In most buildings you can wire up any combination of: 120V only - hot + neutral - used for most "regular" receptacles for plug-in devices, lighting, ...
manassehkatz-Moving 2 Codidact's user avatar
3 votes

How can a 240V device with a single hot terminal be wired with two 120v hot wires?

I reviewed the installation instructions. Those terminals are hot/neutral on 120V and L1/L2 on 208V or 240V. You don't switch the ground through the thermostat, it gets directly connected. Your ...
KMJ's user avatar
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0 votes

Is it possible that a 240V wall heater is connected to one breaker?

Many older 240V devices only have two wires. Today they would have 3 with the 3rd one being a ground lead. There is no need for the NEUTRAL for things like your electric hot water heater and so only ...
jwh20's user avatar
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4 votes

New 40Amp cooktop, should I run 2 wire or 3?

If it's a cooktop only without oven, there's little reason to supply a neutral, as these devices are pretty much all native 240V only - they don't have an oven light bulb. We are also long past it ...
Ecnerwal's user avatar
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0 votes

Drawing up to 12kW through a NEMA 14-50R at 120V

Harper's covers how/why this works. But the related question is why do this? There are very few single breakers (i.e., 120V) larger than 30A. Why? Because there are very few 120V loads that require ...
manassehkatz-Moving 2 Codidact's user avatar
4 votes

Drawing up to 12kW through a NEMA 14-50R at 120V

Congrats, you just invented the multi-wire branch circuit. Yes, in a 120/240V split-phase situation, the neutral will carry only the differential current. In fact, for wire thermal rise calculations,...
Harper - Reinstate Monica's user avatar
5 votes

Is my 240v outlet wiring adequate for a welder?

So you are trying to pull 60 amps (or more than 20) from 20 amp breakers? And are wondering why a breaker tripped? Amps pulled must be less than the breaker size (amps). To fix, do a load calculation, ...
crip659's user avatar
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