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New Electrical Work

Electrical work ranges from the installation of new electrical components to the maintenance and repair of existing electrical infrastructure. It may also include wiring airplanes, ships and other mobile platforms.

4,938 Questions

How close can an electrical outlet be to a gas meter?

The NEC does not address this situation. Your local utilities may have rules on this. Use common sense. You would not want any electrical device near a gas meter that could leak. Just do not put one close to a gas meter and you know you will be safe. If you have an outdoor gas furnace and want to install a GFCI near it just make sure to install it as far from the gas meter as possible.

Is it normal for tester to show hot on a light switch with it in the off position and no power going to the light it controls?

No, it is not normal for a tester to show a hot signal on a light switch when it is in the off position and there is no power going to the light it controls. This could indicate a wiring issue or a faulty switch that needs to be addressed. It is best to consult a qualified electrician to investigate further and ensure safety.

The neutral conductor at sub panels must be?

The neutral conductor at sub panels must be isolated or kept separate from the grounding conductor to prevent the possibility of creating parallel paths for current flow. This separation helps to maintain the integrity of the grounding system and reduce the risk of electrical hazards.

How much voltage can a 20 gauge wire carry?

A 20 gauge wire can typically carry up to around 7-10 amps of current. The voltage it can carry depends on insulation and the specific application, but generally, it can handle voltages up to 300V safely. It is always important to consult with electrical codes and guidelines for specific applications.

Advantages of ring connection of socket outlet compare to radial connection of socket outlet?

A ring connection of socket outlets provides redundancy and ensures that if one part of the circuit fails, continuity of power supply is maintained through the other loop. It also allows for a more balanced distribution of electrical load throughout the circuit compared to a radial connection. Additionally, ring circuits typically require less cable and offer cost savings in materials.

Can regular PVC glue be used on electrical conduit?

No, regular PVC glue should not be used on electrical conduit. It's important to use a solvent specifically designed for electrical conduit to ensure a secure and safe connection. Using the wrong type of glue can compromise the integrity of the conduit and pose a safety hazard.

When adding a receptacle to a sun room what gauge wire?

Most building codes call for 12 guage wire for receptacles and 14 guage (smaller) wire for lighting.

To be legal, you must check your local building or electrical code, often available at the public library.

There is no designation of "sun room" in the National Electrical Code. Unless a receptacle is in an area designated in Article 210.52 (B) as one requiring a 20-amp small appliance branch circuit, it is only required that receptacles be on a 15-amp circuit with 14 gauge wire. These 20-amp "small appliance" areas correspond to recognized food preparation and consumption areas: kitchen, dining room, breakfast room, pantry, or similar.

Certainly, it is important to comply with local codes. However, people who conduct the trade on a regular basis need to continually compare their practices with existing and new codes to maintain compliance. The idea that a complete novice could digest and accurately apply the complexities of the National Electrical Code after glancing through a copy at the library is absurd, which is why many municipalities do not allow electrical installations by anyone but a licensed professional.

How many watts is safe to use in a 240 volt outlet?

There are two important formulas when calculating Voltage, Current, Resistance and wattage. Ohm's Law states that Voltage = Current x Resistance; and Watts = Current x Voltage x PF, where PF is the power factor and has a value from zero to 1. For a purely resistive load the PF is 1 so the formula is simplified to Watts = Current x Voltage. PF decreases for loads like motors or lights with ballasts.

You would need to know the current rating of your breaker. For example if a 20A breaker is available and load is resistance only them you could support 220 * 20 or 4400 watts. However you only size load for 80% or rating so in the example the wattage would = 3520 watts or 3.52KW.

Should the light in a newly wired house be off when both 3-way switches are in the down position?

When you have two switches that control the same light(s) there are only 4 possible states.

Up Up

Up Down

Down Up

Down Down

If the starting position is Down/Down and th light if OFF then

Up/Down or Down/Up states will turn ON the light.

If the starting position is Up/Down or Down/Up and the light is ON then

Up/Up or Down/Down will turn lights OFF.

Why do wall outlets arc and burn?

because

1) you are plugging them in under load

2) they no longer fit properly, so when a load is applied the current path is not always constant (cord wiggling from movement) so the electricity has to jump (arc).

+++

Persistent arcing (not "arching"!) will damage them! If the problem is as described in answer 2)... replace it!

Does a two pole breaker require a trip on both poles or is one trip enough?

Answers for the US:

A true 2-pole breaker (with a single operating handle) is designed such that an overload on either pole will cause a trip, disconnecting both poles. This type of breaker must be used to supply a 240 volt appliance.

Breakers with separate operating handles or separate breakers should never be used to supply 240 volt appliances, because a trip on one of the breakers may not trip the other, leaving the circuit energized - a very dangerous condition. This is absolutely illegal in the US.

Another view:

They make both types. If a 220-240 Volt device is connected to a 2-pole breaker it may be using both 110-120 V to operate. For example an electric stove may have 220-240 V across the heating elements and use 110-120 V for the clock. Hence, if only one pole tripped the stove may appear to be on because the clock is working, but the 220-240 functions won't work. If you find this condition, have it immediately corrected, because it is both unsafe and illegal.

How can you build a 40 amp x 12 volt batterycharger excl converter?

To build a 40 amp x 12 volt battery charger, you will need a power supply that can provide at least 40 amps at 12 volts. You will also need a charging circuit that can regulate the current and voltage to safely charge the battery. It's important to include safety features such as overcharge protection and short-circuit protection to ensure the battery is charged safely. Additionally, consider incorporating a digital display to monitor the charging progress.

How many amps should a starter draw?

A typical starter motor draws around 50 to 150 amps while cranking an engine. If the current draw is significantly higher or lower, it may indicate a problem with the starter motor or the electrical system.

How many amps does a hot tub draw?

That will depend on the size of the motor, number and wattage of the lights, heating capacity of the system...

Each manufacturer decides their own specifications. You'll need to refer to the owners manual, installation manual or contact the manufacturer.

ANS 2 - ALL the above is perfectly correct, but to simplify it a little. - Most of the hot tubs I see are 220v, and draw 7-9 amps for the pump and 22-25 for the heater. I work on many tubs and spas.

Check all specs before fixing or changing anything, and be careful, electricity and water can be dangerous.

How many amps does a tube light use?

0.2 amps in general by 40 wattts tube.

if u want to find it than u divide watts by voltage.

Will a 600 watt amp be any louder then a 400 watt amp with 400 watt woofers?

It is possible that a 600 watt amp could be louder than a 400 watt amp when paired with 400 watt woofers, but it also depends on other factors like speaker efficiency and the overall quality of the components. More wattage generally means more power and potentially more volume, but it's not the only factor that determines loudness.

What gauge wire do you use for a refrigerator?

For a refrigerator, typically a 12 or 14 gauge wire is used. Check the appliance's manual for specific requirements, as wire gauge can vary depending on the model and power needs of the refrigerator. If in doubt, it is recommended to consult a licensed electrician for guidance.

Does volts affect wiring size?

In general, volts affects the spacing of conductors and the level of insulation they receive. The higher the voltage, the greater the electrical 'pressure', requiring conductors to be more separated and/or insulated to prevent shorting and arcing. You should always use wires and connectors rated for your voltage or greater.

Can 10-2 wire be used for an outlet?

Yes, 10-2 wire can be used for an outlet. The 10-2 wire consists of a black hot wire, a white neutral wire, and a ground wire. Ensure that the wire gauge matches the amperage requirements of the outlet and that it is installed according to local electrical codes.

How many Amps is 50 Hz?

Your question is akin to asking how many beef steaks are there in an orange! The ampere (not amp!) is used to measure electric current; the hertz is used to measure frequency. These are two completely different quantities and do not equate to each other!

Can you wire a switch downstream from an outlet?

If you are asking can you put a device, controlled by a switch, using a connection with an outlet, the answer is yes. The caveat is that whatever you add must stay within the amperage rating of the controlling fuse or breaker.

My breaker says use 75 degree wire can i use 90?

You can use 90 degree celcius rated wire. It just must be derated to the 75 degree column in the book NFPA 70 article 310.16 table. Meaning, if you are running romex wire, you don't have to run larger wire in most situations.

How many amps does a 65 watt light bulb use?

Amps x volts = watts

So, assuming you are running on 110 volt line, the answer is 65 watts/110 volts=.591 amps.

How much to run 30 amp service?

The cost to run a 30-amp service will vary by location and complexity of the installation. On average, you can expect to pay between $1,500 to $3,000 for a licensed electrician to install a 30-amp service. Additional costs may apply for permits, materials, and labor.

What size wire is needed for 1600 amp service?

A 1600 amp service typically requires 500 kcmil copper wire or 750 kcmil aluminum wire. It's important to consult with a qualified electrician to determine the exact size and type of wire needed for your specific installation to ensure safety and compliance with local electrical codes.