Breakers are an important safety function of waiting handlers. Circuit breakers room not just a move to turn a heating system on and also off. They defend the wire that feeds the strength to your furnace in situation of an overload such together a shorted engine or heating element.

The quantity of current or electrical power that a heater uses is a “load” on the circuit or wire that feeds the furnace. If the load is big enough it provides sense to division that load into two or an ext circuits making use of a breaker for each circuit.

DISCLAIMER: This is not a guide. This article is around why heaters have two breakers. Cable sizes have the right to vary by regional codes, cable length, form of wire, and also temperature. The wire sizes mentioned below are because that explanation purposes only.

A bigger load needs a bigger wire. Copper wire have the right to be expensive and also depending on numerous extenuating situations from both the manufacturer come the installer, a decision has to be made regarding the variety of circuits and also the wire size.

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Most electric furnaces or wait handlers in my area have actually two breakers, the most typical load being 15KW. One breaker being a 30 amp i beg your pardon takes care of 5KW and also the other a 60 amp i beg your pardon takes care of the continuing to be 10KW.

For most installations that a reasonable length a 30 amp breaker have the right to be fed v number 10 copper wire and a 60 amp breaker through a number 4 copper wire. Using aluminum cable is a entirety other story not disputed here.

What If There room Two Breakers In mine Furnace and Only One In my Panel?

Sounds confusing maybe yet it’s a genuine thing. You’re looking frantically because that the 2nd breaker in her panel to shut of the air handler yet all you can discover is one. It’s a single conductor or cable in a main electrical panel the is feeding 2 breakers in a furnace.

If you are confident, willing, and able come look inside her furnaces manage panel her would see what is referred to as a solitary point connection. Similar to the one pictured below.

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It’s customary and also even allowable under details conditions come wafer increase a panel to allow an ext circuits. Overloading the panel is one of those certain conditions. Just your electrician knows. Well, maybe you execute also.

Keep in mind the there are typically two types of breakers in a panel. No speaking the brands, but sizes. Sizes in relation to voltage. Over there are solitary circuit breakers that feed your lights and receptacles (the plugins ~ above the wall).

And there are twin circuits, they room the broader switches. If girlfriend look close you can notification that the move or toggle top top a twin breaker connects come what kind of looks prefer two single breakers.

Double breakers feeding appliances prefer your waiting conditioner, electric range, dryer, electric water heater, etc.

I hope you feel the this is all an excellent to recognize stuff. I have actually a many customers who have actually no clue and this is important to her safety and the serviceability of your home.

You need to recognize what circuit breaker go to what circuits or appliances. It’s constantly a tiny too late as soon as you need to shut turn off an appliance and you can’t recognize which breaker is the right one to switch and make the kill.