PLEASE EXPLAIN
Heated driveway?

Commercial snow melting. (E.g. TOYOTA + ELEKTRA).

HYPOCAUST. Made in GREECE and ROME

ONDOL - The Korean invention

American Legend: Architect Frank Lloyd Wright

From STONE COLD to NICE WARM floors in just 2 hours?

New Kitchen Project. (Part 1)

New Kitchen Project. (Part 2)

Radiant heating in one day?

From cold slab floor to comfort and beauty.

How to connect UCCG-9991 programmable thermostat for radiant floor heating?

How to connect MTC-2991 manual thermostat for radiant floor heating?

How to choose the in-floor radiant heat ELEKTRA mat?

Many components of the Great Real Estate. (Part 1).

Many components of the Great Real Estate. (Part 2).

How to connect more than 1 mat?

The problem on the roof

Installing radiant floor heating in just one afternoon.

Cathedral ceilings effect & Medieval Hypocaustum (floor heating)

STEP-BY-STEP INSTALLATION




5 FAQ's about ELEKTRA heating cables



5 basic facts to know when choosing ELEKTRA heating cables.


How to de-code ELEKTRA heating cable MODEL #:

 

VCD - one end of the cable to be connected to the thermostat.

VC - both ends of the cable to be connected to the thermostat. 

 

10 -> 10 Watts/running meter = 3.0 Watts/ running ft.

15 -> 15 Watts/running meter = 4.6 Watts/ running ft.

17 -> 17 Watts/running meter = 5.2 Watts/ running ft.

20 -> 20 Watts/running meter = 6.0 Watts/ running ft.

25 -> 25 Watts/running meter = 7.6 Watts/ running ft.

 

Can the heating cable be installed in the thinset just like mats and tiled over right away?

Unfortunatelly - no. Heating cables are thicker than mats.

VC 10 and VC 15 need 1/2"-1" of concrete type of material (thickset, self leveler, mortar) to be in.

VCD 17, VC 20 and VCD 25 need 1"-2" of concrete type of material to be in.

Can the cable be installed under wood or eng. wood e.g. Pergo?

Yes. If the wood on the floor is not thicker than 1/2" then VC 10 can be used providing that it is installed in the mortar, thickset or self leveler at least 1/2" thick. 

Can more than one cable be installed and connected to the same controlling device (line voltage thermostat)?

E.g. VCD 10/70:

is a 10 Watts/running meter or 3.0 Watts/ running ft. with total of 70 Watts heating cable with ONE end to be connected to the 230V thermostat and 230V power source as the cables are for 230V only and always voltage specific.  

What does the above mean when choosing?

The weaker the cable the more of it per square ft. has to be installed (more densely) - this helps with even, gentler heating.

In order to have sufficient heat in the given application (room, floor etc.) X Watts/sq.ft. need to be calculated.

From the experience it was found that best comfort and efficiency results are reached when there are anywhere from 8 to 15 Watts per square ft. for indoors applications

and

25 to 50 Watts for snow and ice melting outdoor applications - all depending on the climate and particular condition such as insulation from the ground etc.

And that is why VCD 10 type of cable (aside from its less rigid construction) cannot be used on the outside - in order to have 30 Watts/s.f. needed for ice melting 10 ft. of it would need to be crammed into 1 square ft. of walkway, driveway or steps. Not a good idea. Therefore only VD 20 or better VCD 25 is meant for the outside.

On the other hand VCD 25 is too powerful to be installed inside to have for instance 10 Watts/sq.ft. output. as this would mean that each sq. ft of the floor would only get some 16" of the cable in fact creating cold and warm spots all over the floor. 

 

 

         

Can the heating cable be installed in the thinset just like mats and tiled over right away?

 

Unfortunately - no. Heating cables are thicker than mats.

VC 10 and VC 15 need 1/2"-1" of concrete type of material (thickset, self leveler, mortar) to be in.

VCD 17, VC 20 and VCD 25 need 1"-2" of concrete type of material to be in.

 

Can the cable be installed under wood or eng. wood e.g. Pergo?

 

Yes. If the wood on the floor is not thicker than 1/2" then VC 10 can be used providing that it is installed in the mortar, thickset or self leveler at least 1/2" thick. 

 

Can more than one cable be installed and connected to the same controlling device (line voltage thermostat)?

 

Yes, if the total power of the cables are less than the max what the thermostat (and the line) can handle

AND

the cables are connected in parallel and not in series. Parallel means that each cable is connected independly and not to one another.

 


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