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Fuses, Circuit Breakers, GFCI (Ground Fault Circuit Interrupter), Surge Protector, etc.

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Q: What types of overload protection for circuits in a single family dwelling?
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Which logic family dissipates the minimum power?

Cmos logic family, because it has no resistors attached who consume active power.


What size conductors for a 2 family with 2 100 amp services together?

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Can you wire a 15 Amp receptacle or socket outlet for a 15 Amp plug on a 30 Amp circuit And would this not work if you protected the receptical with a GFI plug?

No, it would not be safe. DON'T DO THIS! If anything went wrong with an appliance plugged into that 15 Amp socket outlet there would be a serious risk of starting a house fire or someone could get electrocuted. The reason is that the breakers on 30 Amp circuits would not cut the power off if an accident happened or something went badly wrong inside an appliance that takes less than half that 30 Amp current. The current draw would be even less if it was a table lamp or something equally small. As you asked this question here you may not really know how to handle household AC power circuits safely, so be sensible: call a licensed electrician to install the correct circuit breaker and the right size of wiring to power any new 15 Amp socket outlets you need in your house, so that you and your family can use them safely.ALWAYS CHECK WITH YOUR LOCAL WIRING SAFETY OFFICE BEFORE YOU ATTEMPT TO CHANGE ANYTHING- ELECTRICAL SERVICE PANEL, BREAKERS, CABLES OR OUTLETS -ON ANY ELECTRICAL POWER CIRCUITSIF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS.If you do this work yourself, always turn off the powerat the breaker box/fuse panel BEFORE you attempt to do any work ANDalways use an electrician's test meter having metal-tipped probes(not a simple proximity voltage indicator)to insure the circuit is, in fact, de-energized.


How do you calculate the AMPS for a single family dwelling electrical service entrance?

To figure service sizing requirements you must follow the directions below. If you do not know how to size a dwelling then you should probably be getting in touch with a licensed master electrician. Electricity is dangerous if you do not know what you are doing. Some locations however do allow you to do your own. This work requires a permit in most cases and you should be getting in touch with your local building department before you begin any work! To get started on calculating a service size for a single family dwelling you must add the following: Add 3 volt-amperes per square foot of floor area for general lighting and general use receptacle outlets. Plus You must add 1,500 volt-amperes per 20-ampere-rated small appliance and laundry circuit. Plus You must add the nameplate volt-ampere rating of all fastened-in-place, permanently connected or dedicated circuit supplied appliances such as ranges, ovens, cooking units, clothes dryers and water heaters. There are default numbers here if you have not installed your appliances or you do not have an exact model number and ratting yet. The default numbers would be applicable if you are wiring in an outlet for these. This will give you a subtotal. Apply the following demand factors to the subtotal. The minimum subtotal for the loads above shall be: 100 percent of the first 10,000 volt-amperes Plus 40 percent of any portion of the sum that is in excess of 10,000 volt-amperes Plus the largest of the following: 1 - Nameplate rating(s) of the air-conditioning and cooling equipment. 2 - Nameplate rating(s) of the heating where a heat pump is used without any supplemental electric heating. 3 - Nameplate rating of the electric thermal storage and other heating systems where the usual load is expected to be continuous at the full nameplate value. Systems qualifying under this selection shall not be figured under any other category in this table. 4 - One-hundred percent of nameplate rating of the heat pump compressor and sixty-five percent of the supplemental electric heating load for central electric space-heating systems. If the heat pump compressor is prevented from operating at the same time as the supplementary heat, the compressor load does not need to be added to the supplementary heat load for the total central electric space-heating load. 5 - Sixty-five percent of nameplate rating of electric space-heating units if less than four separately controlled units. Forty percent of nameplate rating of electric space-heating units of four or more separately controlled units. This gives you a total volt amperage required. The minimum total load or amps will be the volt-ampere sum calculated above divided by service entrance volts (usually 240V). If you get a number that falls between an available service equipment size then you must go up to the next available size. These instructions will get you through the calculations needed for the International Residential Code. Your code may vary and it is best to consult you local building official for verification of this information. Good luck and MOST important… BE SAFE! Terry

Related questions

What is the gl class code for lessors risk single family dwelling?

63010 - Single Family Dwelling


What is the definition for single family dwelling?

A single family dwelling is a living space designed for one family. It is a house or trailer even, not an apartment.


Single family dwelling renting rooms still considered a single family dwelling?

Yes, the nature of the structure does not change.


What is definition of two family dwelling?

An example of a two family dwelling would be a duplex. The definition would resemble that of a multifamily dwelling, excepting that in this case the structure is only designed to house 2 families.


What are dwelling?

private single family houses


What is a dwelling unit?

Single family home or unit.


Are patio homes considered a single family dwelling?

Yes, patio homes are considered a single family dwelling. They are also apartments, condos, duplexes, triplexes, etc., or any home that has a patio.


Can extended family members live in a single family dwelling?

Yes, they can. The proper name for that would be extended family household.


How do you spell partments?

The term for multi-family dwelling buildings is "apartments."


What is considered a single family dwelling?

A single family dwelling is one designed to be occupied by a single family as opposed to, say, a condominium or apartment building which is expected to be occupied by two or more distinct families. The term refers to the building itself, not necessarily how it's used (some locations may have laws restricting the number of unrelated people who can live in a single family dwelling).


How do you determine the number of branch circuit for lighting load?

An engineered set of blueprints will have all of the pertinent information about circuit loading and circuit numbers and panel balancing already calculated. If there is no wiring schedule on the print then you refer to the electrical code book and abide by the regulations that are set out for circuit loading and the amount of devices that can be connected to that circuit. Single family dwelling: multiply the number of square feet by 3. So a 2500 sq ft home times 3 = 7500 watts. Divide that number by 1500 for #14 wire circuits or 2000 for #12 wire circuits. 7500 divided by 1500 = 5 #14 wire circuits or if divided by 2000 + 3.75 or 4 #12 wire circuits. This would be for the lighting load and general use receptacles through out the home. I always lay my circuits out where a circuit only covers 500 sq ft of the dwelling.


Define a family?

A family is a basic social unit consisting of parents and their children as a group, whether dwelling together or not.