2). MCB Size
| Power | MCB Amp |
| 1 KW | 6 A |
| 2 KW | 10 A |
| 3 KW | 16 A |
| 6 KW | 32 A |
How many amps does an immersion heater use?
Subsequently, one may also ask, how many amps does an immersion heater use? 15 amp . Furthermore, what MCB size would an immersion heater require? It is OK to use 13A or 16A timers on a 20A MCB immersion circuit - assuming that the immersion load is within the timer's current carrying capacity.
What size cable do I need for a 3KW immersion heater?
Similarly, what size cable do I need for a 3kW immersion heater? The mains cable for an immersion heater is a two core and earth 2.5mm cable. This cable should run to a 20amp double pole isolator switch (With neon indicator light) from where a heat resistant 16amp cable or flex should run to the heater.
How long does it take to run a 3KW immersion heater?
If you take the example of required temperature rise above and you have a 3kW immersion heater it would take about 2hrs 30 to heat the water (3kW each hour, so in two and a half hours that would give 7.5kW). The cost of electricity is about 14p/kWh, which means that it would cost about 45p to run a 3kW immersion heater for an hour.
What size MCB do I need for an immersion heater?
Beside above, what MCB size would an immersion heater require? It is OK to use 13A or 16A timers on a 20A MCB immersion circuit-assuming that the immersion load is within the timer's current carrying capacity.
How much current does an immersion heater use?
Immersion heaters are typically 3kW. It costs around 63p to run one for an hour at current electricity prices.
What amp should an immersion heater be?
Immersion heaters usually have a dedicated 16A supply from the fuse board. If you have one coming off the ring main then it should really be disconnected. You don't really need two immersion heaters, two are usually spec'd for electric only systems. One will do for an emergency.
Can you run an immersion heater on a 13amp plug?
Although I have found 3kW immersion heaters running via a 13 Amp plug and socket to work with no problems. No overheating evident at the plug. It must depend upon the quality of the wiring accessories and a good quality installation of socket and plug, and the 13 Amp fuse in the plug being gripped securely at its ends.
What current is taken by a 3kW 230v heater?
Current, I = ? Thus, a current of 12.5 A is taken by a 3 kW electric geyser, working on 240 V mains.
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.
Does an immersion heater need its own circuit?
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.
How do I connect my immersion heater to my mains?
2:084:21How to wire an immersion heater WATER HEATER ... - YouTubeYouTubeStart of suggested clipEnd of suggested clipBlue you connect to n terminal the brown life you connect to L terminal and the earth wire greenMoreBlue you connect to n terminal the brown life you connect to L terminal and the earth wire green yellow to the earth terminal. So there's a supply side.
Can I spur from an immersion heater?
Assuming the immersion supply is on the 24-hour and not an off-peak supply then of course you can. spur off in 2.5mm cable to an FCU with a 3A fuse for your shower pump. That's what ALMOST everybody else does!
What amp is a socket?
13 ampMost of us will have our standard or table lamps wired into a normal 13 amp plug, with a 3 or 5 amp fuse to protect it, and plugged into a standard 13 amp socket. These would then be switched on and off when required as the sockets are permanently connected to the power.
How many amps does a 3kW element?
3 kW is (assuming you are in the US with 120 volts, ) is roughly 28 amps.
What current is taken by a 3kW?
Expert-verified answer Now current, Therefore, 12.5 A of current is taken by a 3 kW electric geyser working on 240 V mains.
What size breaker do I need for a 3kW water heater?
Dedicated circuit, 16amp breaker with 20amp dp switch before the heater, just like an immersion heater.