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Bathroom heating lights

What do electricians think of bathroom heating lights?

They are the highest power devices normally connected to a lighting circuit. Many years ago I had one with a 750W heating element. Combine this with a 100W incandescent bulb and you have a device which consumes 3.7A. Two of these devices will overload a 6A lighting circuit.

Should heating lights be designed in a way to easily connect the heating element to a different circuit than that used for the light? Alternatively, should they be powered from a ring main rather than a lighting circuit?

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0 broadgage over 3 years ago

If multiple such units are required, then either a dedicated circuit, or a fused connection to a ring final would be prudent.
A single heat and light unit should be fine on a standard lighting circuit with a 5 amp fuse or 6 amp MCB.
Consider the likely load on a typical upstairs lighting circuit in an average suburban house. Three bedrooms each with a 60 watt lamp, and another lamp on the landing.
I would not connect two different circuits into a heat and light unit, far too much risk of dangerous confusion during future maintenance.
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0 broadgage over 3 years ago

If multiple such units are required, then either a dedicated circuit, or a fused connection to a ring final would be prudent.
A single heat and light unit should be fine on a standard lighting circuit with a 5 amp fuse or 6 amp MCB.
Consider the likely load on a typical upstairs lighting circuit in an average suburban house. Three bedrooms each with a 60 watt lamp, and another lamp on the landing.
I would not connect two different circuits into a heat and light unit, far too much risk of dangerous confusion during future maintenance.
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Bathroom heating lights

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