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What is the reason for electric heaters saying to never use an extension cord?

Well, you really nailed it. It's the fact that normal everyday garden variety extension cords are usually 16 AWG, or maybe 14 AWG if you're lucky. The reality is, an extension cord, properly sized for ...
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17 votes

What is the reason for electric heaters saying to never use an extension cord?

In addition to the already stated "shouldn't use a flimsy little 18 gauge extension cord", which would have a definite overheating problem, two specifics come to mind: Tripping Tripping ...
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9 votes

What is the reason for electric heaters saying to never use an extension cord?

Lawyers, pure and simple. When you start a fire with an electric heater plugged into an exension cord, even if the extension cord is massively over-adequate and properly protected from damage, you ...
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7 votes

Is 10/2 cable appropriate for a 240V, 30A garage heater outlet?

These heaters need what the UL-approved instructions say they need. However this heater is rated for a 20.8A draw. For heaters, we must provision 125% of that, or 26 amps. That is too much for a ...
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7 votes
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Can I have an electric dryer, a washer, furnace, and gas water heater all in one laundry room?

Only issue I can see is where the makeup air comes from. The washer doesn't matter, but if the dryer, furnace, and water heater all turn on at the same time, they each need air input. Putting ...
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  • 2,452
7 votes

What is the reason for electric heaters saying to never use an extension cord?

Quite simply, it's the law in most states as around 40 states have adopted the international fire code. The International Code Council (ICC) covers space heaters under the International Fire Code, ...
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  • 167
6 votes

Why is my gas heater shutting down the flame and pilot?

Bad thermocouple - it is supposed to sense the presence of a flame, and turn off the gas if it is on, but nothing is getting hot. Last one I replaced was less than $10 at home depot, it is held in ...
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  • 2,177
6 votes

No hot water at faucets after replacing water heater

Check all the supply valves to ensure they are open. It is not uncommon for old valves (particularly gate valves) to break whilst operating, leaving you with a low or no-flow situation (sometimes ...
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6 votes
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Multiple in-wall bathroom heaters on same circuit

No, every hardwired appliance does not need to be on its own circuit. But... Provision power for heaters with a 125% derate You need to study the unit's specs carefully, and note the amps or VA ...
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5 votes

What should I do with the white wire when wiring a 240 volt garage heater?

I assume you are in the USA. The heater is probably a pure 240V load with no need for the neutral (white) wire. you should simply cap the white wire with a wire nut and tuck it back into the ...
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5 votes
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Why would a patio heater slowly die out over time?

It sounds to me like a restriction at the regulator, not the control valve. You mentioned that the previous owner had done some work on it, make sure that he/she did not replace the regulator with one ...
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  • 33.4k
5 votes

Water heater not staying hot more than 10mins

TL; DR: When the temperature is colder outside, your cold water is colder so you have to use more hot water for the same shower temperature. Facts: A shower head puts out 2.5 gallons per minute (GPM)...
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5 votes

Keeping washing machine lines warm in a cold garage

Instead of a space heater, try some pipe heating cable. This is a simple electric resistance heater that is designed to be wrapped around pipes in order to prevent freezing. The good ones have a ...
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  • 8,017
5 votes

Keeping washing machine lines warm in a cold garage

Heat tape will keep the hose from freezing (where it's attached) but there are other freezing risks... e.g. where are the pipes coming from? Do they go into the uninsulated wall? Also there is still ...
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  • 13.7k
5 votes

Is it safe to unplug my electric water heater daily to save energy?

I would suggest a timer like this. Additional start/stop pins can be added if you decide on adding a second on off time (or more) and you can always flip the over ride to the On position. This way ...
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5 votes

What is the third pipe leading to my water heater?

Here's my guess. The left pipe goes to the hot water faucet of a fixture with a common hot+cold spout. Since there is no hot water pressure at that faucet, when you open both faucets some of the cold ...
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5 votes
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Why do space heaters make the air smell like that?

When air contacts a sufficiently hot object, dust in the air burns, and in some cases, particles from the hot object are also ejected similar to how dry ice sublimates. Dust can also gather on the ...
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5 votes
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Safe heater options for small cabin with no electric

There's an absolutely fantastic heater called a wall furnace. It is a proper furnace that mounts in a wall, and is either one-sided or two-sided. You could mount a 2-sided unit on an interior joist ...
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5 votes

Could a Cadet heater release metallic nanoparticles?

A short or arcing would most likely sound more like a buzzing (but could sound like a hiss, I guess) but would also be accompanied by smoke, a nasty "fried circuitry" ozoneish smell, and ...
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4 votes
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How can I build custom air ducts for an in-wall heater?

Probably not the answer you want to hear, but the manufacturer of your heater would most likely prohibit the alteration of air flow into and out of the unit. Doing so would void the industry safety ...
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4 votes

Should I use 12/2 or 12/3 to wire a 220V electric baseboard heater and thermostat?

I'd use 12/3 -- that way, the neutral is there if you need it (for built-in outlets for instance), and you can use standard color codes. (Just about ALL /2 NM is black/white/bare.)
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4 votes
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12 gauge on 30 amp circuit - after thermostat

NO. If this electric heat circuit is on a 30A breaker then ALL the wiring on the circuit must be #10cu (or larger). Even if it feeds just one heater.
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4 votes

220 wiring old to new

What you have in these pictures is a massive code violation, fire hazard as well as an electrocution hazard. This must be rectified first. Leaving this mess intact is negligent even if you cover it ...
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4 votes
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Can you leave cold water running (inlet) through gas water heater - with the heating element actuall OFF?

No problem, the water will just pass through if you turn off the gas supply.
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4 votes
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Can this european sauna heater be installed in the US?

Yes you can, provided your AHJ is OK with the unit, but you should be treating it as a single phase unit -- you'll also need to take precautions with wiring methods The instructions you linked ...
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4 votes

Identify voltage by looking into gang box

Quick answer is that 240v only requires two wires (black and red). Four wires would be power coming in, and the switched power from the thermostat going out. If there are 6 wires, then power comes ...
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4 votes
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Identify voltage by looking into gang box

Assuming you're in the US and standard NEC color codes were followed when this was installed, it's all 240V (or possibly 208V if you're in NYC or a large apartment complex). Both black and red are ...
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4 votes
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How can I control a 240V heater from a pushbutton timer switch?

What you want is possible, but requires an extra box While button-type (electronic) countdown timers that can switch 240V directly aren't a thing due to the limited market they would have; this is ...
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4 votes

Motion detector switch affected by heater?

Absolutely! Most motion sensors are IR (infrared) detectors and they can "see" heated air as it moves. If it moves fast enough it may trick the sensor into thinking that it's a human vs. just heated ...
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