Modification of Old Electrical Work

You would need at least 3 AWG at 120 volts, giving you a 4.8 percent voltage drop at the maximum load of 37.5 amps (using 30 Amps at the ordinary 80 percent rated capacity of the circuit). For 240 volts you would only need 6 AWG.

The provisioning of the breakers in a panel has a physical limitation regarding how many breakers will fit and a load calculation based on what devices the panel has to support. Your question really applies to both types of breakers. There are rules of thumb for sizing and populating the panel. This information is in the National Electric Code. If you have an existing panel and a new application requiring additional breakers for 220 Volt applications, the current draw in panel can be measured by an electrician and you will know what additional load you can support. If breakers fit physically in the panel, but connected devices exceed the total current capacity you will trip the main panel breaker. At this point you would need to get an electrician involved.

No, a 27 amp start-up on a 15 amp circuit breaker can potentially overload the circuit and cause it to trip. It's recommended to use a circuit breaker that can handle the full current draw of the device to prevent tripping and ensure safety.

When buying a distribution panel look for the capacity rating of the bus. There are some panels that have a 100% rating and others that only have an 80% rating. This rating is reflected in the price of the panel. The least expensive panel might not be the right one for your application.

No, it is not safe to use a 250 volt fuse in place of a 600 volt fuse in a 277 volt system. The voltage rating of the fuse should always be equal to or greater than the voltage of the circuit it is protecting to prevent potential hazards such as arcing or fires. Using a lower voltage fuse could result in the fuse failing to blow properly and may lead to dangerous conditions.

It depends on the load. In a normal home I would not install more than a combination of 12 outlets and lights on a 15 amp circuit. But if the room is an office room with lots of electronics then I would limit it to a combination of 10.

To wire a pull chain to a bathroom light that is constantly hot, you would typically connect the hot wire from the light fixture to one terminal of the pull chain switch and then connect the other terminal of the pull chain switch to the hot wire in the electrical box. Make sure to turn off the power supply before making any electrical connections for safety. If you are unsure, it is best to consult a licensed electrician.

A 1250 MCM copper conductor with an insulation factor of 90 degrees C is rated at 645 amps. If you have ever worked with these sized conductors you would know that it is nearly impossible to bend, let alone pull it into a conduit. Seeing how the conductor size is over 1/0, it can be paralleled up to smaller size conductors to meet the ampacity requirement. The options are, parallel 350 MCM, triple parallel #2/0 or quad parallel using #1/0 size wire. These wires are terminated in double, triple and four barrel lugs respectively. It has to be kept in mind that as the amount of wires increase, so does the conduit diameter size, to accommodate the conduit fill code rule.

Yes, a 10 amp AGC fuse can be used in a 10 amp rated DC circuit as long as the fuse rating matches the circuit's ampacity. This ensures that the fuse will blow before the circuit is overloaded, protecting the circuit from damage and potential hazards.

No, it is not recommended to run multiple 6-gauge wires in parallel from a 100 amp breaker. Instead, you should use a single appropriately sized wire for the 100 amp circuit to ensure safety and compliance with electrical codes. Running multiple wires in parallel can cause unequal current distribution and potential overheating issues.

Yes, you can run parallel wires to feed a 100 amp breaker. However, it is important to follow local electrical codes and regulations when doing so. It is recommended to consult with a licensed electrician to ensure the installation is done safely and correctly.

Each hair dryer will need 6.5 amps to operate at 1300 W. When both hair dryers are used on the 15 A circuit breaker, there will be a total of 13 A being used. This is within the 15 A limit of the circuit breaker.

Yes, the rating of the fixture is the maximum size bulb that the fixture should take. The fixture is rated to dissipate a certain amount of heat that is generated by a bulb. By putting in a bigger bulb and thereby generating more heat than the fixture was designed for, could destroy the fixture. Some fires have been known to start this way.

No, a GFCI outlet is designed for use with standard 120-volt circuits. Attempting to use a GFCI outlet with a 240-volt split circuit could cause damage to the outlet, the circuit, and could present a safety hazard. It is not recommended to use a GFCI outlet in this manner.

For a 100 amp panel 240 ft away, you would need to use 2 AWG aluminum wire to minimize voltage drop and ensure safe and efficient operation. It's important to consult with a licensed electrician to determine the exact specifications needed for your specific installation.

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.

To safely carry 35 amps for a 12V DC system, you would need a wire size of at least 8 AWG. This gauge wire can handle up to 40 amps for power transmission over reasonable lengths without significant voltage drop or overheating issues. It's always recommended to consult with a professional electrician to ensure proper sizing and installation for your specific application.

There are several possibilities, depending on the needs of the electrician who wired the light for you. In general, the wires are either power in or out of the box, and what is called a "switch leg". If you have questions about your specific application you should contact an electrician in your area to inspect the wiring and explain to you what it is for.

Three or four would be normal. The total current should not exceed the rating of the main panel, so depending on how intensively the different circuits are used, more could be installed.

It depends on duty factor of each connected device. For a continuous load you can support 80% of 125 Amps which is 100 Amps. That would support two 50 A breakers each supporting a 40 Amp continuous load. If your loads were less and not continuous you can have more breakers. It is all a matter of supply and demand.

To convert a swivel recessed light to accept a pendant light kit, you will need to remove the existing recessed light fixture and install a pendant light fixture in its place. This typically involves disconnecting the wiring for the recessed light and attaching it to the pendant light fixture according to the manufacturer's instructions. You may also need to install a mounting bracket to support the pendant light fixture.

The active or hot wire in an electrical circuit is the wire that carries the current from the source to the load. It is typically colored black, red, or another color distinct from neutral and ground wires. The active wire is where the electrical energy is supplied to power devices or appliances.

It is not a good policy to over fuse devices. When a manufacturer develops a product it has to go to an underwriters testing division where they self destruct the equipment. It is during this test phase where the safety section determine what it should safely be fused at. By over fusing the equipment by 10 more amps that the equipment was designed to handle is taking the risk of destroying the equipment should a fault current appear. Keep safe and don't do it.

The short answer, no.

The long answer - A 15a 110v current tap can supply approximately 1650 watts. A 30a 110v load would assume a demand of 3300 watts. Splicing multiple cables together to supply this load would be an unsafe practice, as it would be possible for one or the other cables, or receptacles to become overloaded, creating a possible fire hazard.

Assuming the generator is rated above that load demand, it would be much safer to add a correctly rated outlet to the generator, and utilize a properly rated cord for connection.

You can if you have the existing materials. If you want to keep your costs down the same installation can be installed with the following materials. For wire all that is needed is 3C #8 wire. For the breaker a two pole 40 amp will work. You will need a 4 11/16" square box to install the range receptacle into.