Divide 20A by the Amps listed on the label of each fixture ballast. A T8 bulb will use an electronic ballast. They generally run 1A for four 4 foot bulbs. Try 15 four bulb fixtures per circuit and use a 20A rated switch.
Yes. I know of no limits to how many regular receptacles (outlets) you can "piggy back" onto one GFCI receptacle. However, in commercial and industrial construction there are limits to how many receptacles can be placed on any one circuit. These limits in the United States and according to the NEC are: 10 receptacles on a 15 amp circuit and 13 receptacles on a 20 amp circuit.
A plug and play 15v amp circuit is one that you can simply plug in. It has a three pronged plug so no special wiring is needed.
Probably not. You have to do a bit of searching. 2 x 4 fluorescent fixtures usually have two ballasts in them. What you need to do is look at the amperage printed on the ballast label. Multiply that number by 18 for the nine fixtures. The door openers will probably only be used at one at a time. But they are motor loads and could draw up to 15 amps instantaneous on start up.The best bet is to split the circuit up, putting the lights on one circuit and the door openers on the other circuit. This can be done by using a three wire cable for the circuit.
Answer for USA, Canada and countries running a 60 Hertz supply service.Yes, a 240v 50amp circuit can be changed to a 120v 30amp circuit. The wire for the 50 amp circuit should be a #6. This is more than ample for a 30 amp circuit. Remove the two pole 60 amp breaker and replace it with a single pole 30 and a single pole 15 amp breaker. One of the two #6 wires will be terminated on the neutral bus (if there is a white use it) and the other #6 will be terminated on the new 30 amp breaker. This will give you the required 120 volt 30 amp circuit. The new 15 amp breaker that was installed just to fill the hole from the two pole 60 amp breaker will give you a spare 15 amp circuit. I have no idea what you are trying to do, but there is no way you can change 220v 50 amp to 120v 30 amp. You can take 220 volt input in the top of your circuit breaker box. Then half of one side will be 120v and half of the other side will be 120v. You can install a 30 amp fuse. You should hire an electrician.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-energizedIF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.
Rule of thumb is about 8 unless it is a dedicated circuit. The NEC has no requirements on the number of receptacles that can be on a circuit in a residential setting. The circuit should be layed out to only cover 500 sq. feet. A single room of 500 sq. feet, you could put as many receptacle as you want on one circuit.
The way you calculate this is by looking at the amperage marked on the ballast of the fixture. Different size fixtures have different size ballasts. A 15 amp circuit is allowed to be loaded to 80%. 80% of 15 is 12amps. Now all you have to do is divide the ballast current into 12 amps and you have the total number of fixtures that you can added to the circuit.
Yes. I know of no limits to how many regular receptacles (outlets) you can "piggy back" onto one GFCI receptacle. However, in commercial and industrial construction there are limits to how many receptacles can be placed on any one circuit. These limits in the United States and according to the NEC are: 10 receptacles on a 15 amp circuit and 13 receptacles on a 20 amp circuit.
10 for a 15 amp circuit
You can find out more information on how many new fixtures can be put in a circuit by going to a home improvement store such as Lowe's or Home Depot or going to their direct website.
No, the one amp fuse is the recommendation of the manufacturer of the circuit. By replacing it with a fuse five times larger will default the warranty placed on the equipment by the manufacturer. Where one amp will do no damage to the circuit, five amps could destroy the components that are connected in the circuit.
Can you supply three 220 -240 volt 16.6 amp infrared heaters with one circuit?
The unit of current is the ampere (A), or amp for short. A thousandth of an amp is a milliamp (mA). One amp is equal to one coulomb of charge per second.
The unit of current is the ampere (A), or amp for short. A thousandth of an amp is a milliamp (mA). One amp is equal to one coulomb of charge per second.
A plug and play 15v amp circuit is one that you can simply plug in. It has a three pronged plug so no special wiring is needed.
Probably not. You have to do a bit of searching. 2 x 4 fluorescent fixtures usually have two ballasts in them. What you need to do is look at the amperage printed on the ballast label. Multiply that number by 18 for the nine fixtures. The door openers will probably only be used at one at a time. But they are motor loads and could draw up to 15 amps instantaneous on start up.The best bet is to split the circuit up, putting the lights on one circuit and the door openers on the other circuit. This can be done by using a three wire cable for the circuit.
When you mean simple circuit, I assume a source of one volt across a load of one ohm, which, according to Ohm's Law, equals one amp.
Household circuits come in two flavors, 15 amp and 20 amp. Check the circuit breaker or fuse in your panel to see which one your outlet is wired to. If the outlet is on a 15 amp circuit, you could only run one, but if you have a 20 amp circuit, you could get away with two, assuming there are no other appliances plugged into the same circuit. The electrical code says circuits should be loaded to no more than 80% of the breaker's rating. for a 20 amp breaker, that works out to 16 amps. Your two lamps would draw 16.6 amps, so you would be right at the limit.