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Using basic calculation of amps times volts equals watts you can see that a 15 amp circuit at 120volts has a capability of 1800 watts but a circuit should never be loaded above 80% so you have 1440 watts available. Most recessed light will not allow higher than a 75 watt bulb so assuming this take 1440 watts and divide by 75 watts to get 19.2 bulbs as you cant have a partial bulb go with no more than 19 lights. On a normal height ceiling of about 9 feet I never place recessed lights closer than 24 inches to the wall. As for interconnecting you just run a wire from one recessed light to the next. I would recommend that if you do not feel comfortable with the placement or wiring of these lights that you contact an electrician that specializes in lighting design to help you.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoRemember you can now use Compact Fluorescent Lamps (CFLs), which take only 1/5 of the power of conventional light bulbs, without having to rewire your light fittings...
See the related question and answer about CFLs.
If you are following the NEC code (most popular in the USA) 14 guage wiring for general purpose lighting can not be protected at 20 amps. 15 amps is the maximum.
Designing for constant loading, a 15 amp circuit would allow for a total of 1440 volt-amperes (roughly equal to wattage)
The amount of fixtures that can be connected to this circuit depends on the MAXIMUM wattage rating of each fixture. For example, if the fixtures you are using are rated max 150 watts (even though you are only putting in 75 watt lamps for now) you must perform the calculation based on 1440 divided by 150 which is 9.6, or 9 fixtures.
If the maximum rating of the fixtures is 75 watts, then the answer would be 1440 divided by 75 = 19.2, or 19 fixtures.
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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.
Wiki User
∙ 10y agoAssuming only lights are on the circuit and no outlets you can run 1440 watts on the 120 volt circuit. So if the lights were each pulling 75 watts you can install no more than 19.
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How many recessed lights can you put on a 20 Amp circuit breaker?
If there is nothing else on the circuit then you could easily install 15. If there are outlets on the same circuit then try and keep the total of outlets and lights to a maximum of 15. But in reality the number of devices depends on how many amps each device pulls. Add up the amperage of the recessed lights you are going to install and then add any outlets and what may be plugged into them to get the number you can install. A 100 watt light bulb will draw about 1 amp. So you can easily have 15 on a 20 amp circuit.
How many lights on 20 amp circuit?
Provided you use wire that is rated for 20 amps.
How many 20 amp ground fault interrupter circuit breakers are used to power the lights and receptacles for the medium shelter?
four
How many elec outlets can a GFCI detect?
7 on a 15 amp circuit and 9 on a 20 amp circuit.
What size romex for wiring 6 can lights on 15 amp circuit?
You should use 14 AWG wiring on all 15 amp circuits.
How many recessed lights can you put on a 20 Amp circuit breaker?
If there is nothing else on the circuit then you could easily install 15. If there are outlets on the same circuit then try and keep the total of outlets and lights to a maximum of 15. But in reality the number of devices depends on how many amps each device pulls. Add up the amperage of the recessed lights you are going to install and then add any outlets and what may be plugged into them to get the number you can install. A 100 watt light bulb will draw about 1 amp. So you can easily have 15 on a 20 amp circuit.
How many 1.2 amp lights can a 20 amp breaker hold?
No more than 13 maximum on a 20 amp circuit.
Can six recessed lights of 50 watts be on a 15 amp breaker?
Should be fine if that is all that is on the breaker.
How many lights on 20 amp circuit?
Provided you use wire that is rated for 20 amps.
Can 20 amp breaker with 12 gauge wire handle 8 recessed lights?
Yes. I am assuming this is a residential question. A better answer is...if the 8 recessed lights draw fewer than 16 amps together, it is good.
How many 40 watt regular lights can you put on a 20 amp switch?
You can safely put 48 regular (incandescent) 40 watt lights on a 20 amp circuit. If at some future date you might place higher wattage lights in the circuit, you will want to limit the number of lights to 20.
How many 150 watt flood lights can be on a 20 amp circuit?
The voltage needs to be known to give an answer to this question.
How many 20 amp ground fault interrupter circuit breakers are used to power the lights and receptacles for the medium shelter?
four
How many 65w lights can be placed on a 15 amp circuit?
A 15a circuit can supply approximately 1650 watts, so 1650/65=25. I would stop at 20.
Can you use 14 gauge wire with a 15 amp breaker for recessed lighting?
To answer this question the circuits voltage must be stated. Find the total wattage of the lights, use the following formula. I = W/E, where W is the total wattage and E is the circuit's voltage.
Can you power 7 recessed lights on one 15 amp breaker?
count your total amount of watts you are going to use (ie 7 bulbs 75 watts =525watt) watts divided by voltage 525 divided by 120vac = 4.375 amps, you can only load a circuit to 80% 15 amp breaker @ 80%=12 amps, you cannot exceed this by the electrical code.make sure you know what other loads are on the circuit unless this is a separate circuit. hope this helps..
How many elec outlets can a GFCI detect?
7 on a 15 amp circuit and 9 on a 20 amp circuit.
