What size cable do I need for a 3kw heater?


What size cable do I need for a 3kw heater?

Two core and earth 2.5mm cable is used for the mains cable. A heat resistant 16amp cable or flex should run to the isolator switch from where the neon indicator light should light up.

What size fuse do I need for a 3kw immersion heater?

3kW immersion heaters should be on 20A DP switches not 13A FCU’s. I am inclined to agree, at least assuming a dedicated radial at 16 or 20A, as a 13A fuse is redundant.

What size MCB for an immersion heater?

2.5mm from consumer unit to fused spur by immersion heater ,16A mcb in CU and of course if cable is not surface ,then you know you need RCD.

Can 3kW be plugged in?

3kW is fine, in theory, on a 13A plug with 1.5mm² flex. It will get warm due to resistance in the fuse and contacts, but will not carry on getting warmer once it has reached equilibrium.

How many amps does a 3 kW heater pull?

3kw is just over 13 amp 3000/230 = 13.04 amps and given the circuit is a radial fed with a 16 amp breaker with nothing else on it, the fcu is doing nothing of use and is un-necessary. Also adding 3kw heaters onto a ring will likely overload it.

How many amps is a 3kw heater?

Can 3kw be plugged in?

How many amps does a 3kw heater use?

How many amps is a 3kW heater?

How many kW is an immersion heater?

Hot water immersion heater elements are usually rated at 3 or 6 Kilowatts (kW). Hot water cylinders/tanks come in many shapes, sizes and capacities, ranging from 40 to over 400+ litres in larger homes.

Do electric cookers come with cable?

If you just bought a new electric cooker, you should have a cable included in the packaging.

Can a 3 kW immersion heater be supplied from a dedicated circuit?

A 3 kW immersion heater connected to a socket-outlet of a ring or radial final circuit may lead to an overload on the circuit. BS 7671 does not require an immersion heater to be supplied through a dedicated circuit. There are two reasons however, why an immerision heater should be supplied from a dedicated circuit:

Can a immersion heater be supplied from the same socket?

Where an immersion heater is supplied from the same circuit as, for example, socket-outlets (thereby forming part of a ring or radial final circuit), the automatic disconnection of the circuit would lead to a loss of supply to both the socket-outlets and the immersion heater, possibly causing inconvenience.

Where to find code 2 for immersion heater?

Where during periodic inspection, an inspector finds an immersion heater supplied from a socket-outlet on a ring or radial final circuit a Recommendation Code 2 should be recorded.

What kind of Breaker does an immersion heater need?

Immersion heaters should be on their own dedicated circuit Sam, 16a breaker and a 20a DP switch, not a fused spur. Having said all that there are plenty around wired the way your’s is, it was the usual way of doing it some years ago. Nothing wrong with 2.5mm cable, that’s well up to the job,

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