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Asking how many lights can be connected to a breaker is like asking "How long is a piece of string?".

The total amperage of the lights you want to use together at any one time must not exceed the safe load current of the circuit breaker on your lighting circuit.

It is impossible to give a general answer because the total number of lights that can be installed will depend on the wattage and therefore the amperage drawn by each light and also on whether or not they will all be switched on together at the same times of day or night.

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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13y ago
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13y ago

A light switch is to be used within its ampere rating. You would have to calculate how many amps each light needs then divide that number into the ampere rating of the switch. Round down, do not exceed the whole number.

Example: a 75W light bulb would need 0.625 amps at 120V (I=P/E)

a 15A switch could have 24 75W light bulbs (15/0.625)

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11y ago

The number of switches is not really relevant, it is the total load that matters. It must not exceed 15 Amps

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Q: How many switches can you put on a 15 amp breaker?
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