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What ampacity column are you allowed to use for derating using thhn wire?
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What is the table 310.16 of the NEC?
It's a table that shows the ampacity ratings for the particular wire size and insulation you are using. Example: #12 THHN CU is rated @ 30amps under the 90 degree column. (#12)is the wire size, (THHN)is the type of insulation on the wire (CU)is copper. You shouldn't be using the chart unless you're a qualified electrician simply because there are many sub rules and exceptions.
Can you double up on insulated wires for greater ampacity?
According to the 2008 National Electrical Code, the smallest wire that can be run in parallel is a 1/0 AWG (American Wire Gauge). If the wire you are using is smaller than a 1/0 AWG, you will need to increase the size of the wire to handle the amperage (Table 310.16 of the NEC).
DoesCode permit connecting receptacles to a 20ampere branch circuit using short lengths of 14AWG conductors as the pigtail between the receptacle terminals and the 12AWG branch-circuit conductors?
No. This practice is a violation of Article 210.19 (A) of the NEC. "Conductors of branch circuits supplying more than one receptacle for cord-and-plug-connected portable loads shall have an ampacity of not less than the rating of the branch circuit."
Full-adder using 4 X 1 multiplexer?
its simple......just you have to make truth table of input and output ......then u will notice that output column can be obtaining by just replacing it by third input or negation of it... in some cases output just hav to connect to one or zero input........for the corresponding output
Do you have to size all wire in a house out of the 60c degree column in 310.16 of the nec including the ser cabletype xhhw for the range?
You don't necessarily have to size all wire from the 60c column. However there are three main reasons to do so: 1) The circuit breaker is marked "60/75c" and installed with other breakers in a panelboard 2) Your appliance is not specifically marked for a higher rating (either 75c or 90c) 3) Any part of your circuit is rated at 60c (explained below) In order to use a rating, whether it be 60c, 75c, or 90c, the enclosure, circuit breaker, conductor, and terminals must be rated for use at that rating. This process follows a 'weak link' method, and the rating of the 'weak link' must be used when using Table 310.16. Example: If you have a panelboard rated 75c, a breaker rated 75c (not 60/75), a conductor rated at 75c, and equipment (such as the range) rated at 75c, you are allowed to use the 75c column. If any component is rated lower, everything must be used at that lower rating. **If there is no explicit marking on the range indicating use at 75c or 90c, the range is assumed to be 60c. The same is applicable to all loads.** There is a special circumstance with breakers marked "60/75c"...If you have circuit breakers marked "60/75c", and they are installed together (such as in a 42 circuit panel), you must use the breaker at the 60c rating, and thus size your wire using the 60c column. If the breaker in question is in an enclosure by itself, again marked "60/75c", you may use the breaker at its 75c rating. Check the ratings of the enclosure, breaker, conductor, and terminals, and you may be able to use a higher rating than 60c. (XHHW is rated at 90c in dry and damp locations, and 75c in wet locations.)
What is derator?
In electronics, derating a device means using it without turning its power all the way up. People derate electronic devices to make them last longer.
Can you make a sentence using the word column?
The number 8 is in the left column.
What is the table 310.16 of the NEC?
It's a table that shows the ampacity ratings for the particular wire size and insulation you are using. Example: #12 THHN CU is rated @ 30amps under the 90 degree column. (#12)is the wire size, (THHN)is the type of insulation on the wire (CU)is copper. You shouldn't be using the chart unless you're a qualified electrician simply because there are many sub rules and exceptions.
What is the best fractionating column for ethanol distillation using lab glass?
distillation column
What Compares data using columns?
Column
What is compares data using columns?
Column
Can you give me a sentence using the word column?
in a newspaper we have many Columns. A table is made out of column and raw.
Expand 705 using place values?
705 In place values. '5' is the UNITS column '0' is the TENS column '7' is the HUNDREDS column. NB The next column to the left is the THOUSANDS column NNB The next column to the right is the TENTHS DECIMAL column.
What is a spreadsheet column?
It is apace provided for a set of data all occupying the same column in the spreadsheet's matrix so that they can be referenced as a set using the column header or individually by the column/row intersections.
How do you do column width command in Excel?
When you say column with command, you mean automatically adding a new column or autoadjusting a column?To add a column using a shortcut, you need to highlight a column/s first (short cut is Shift key + Space bar) then press your Ctrl and + Keys simultaneously.If you want to auto-adjust a column's width using a shortcut, you can use Alt + H O + I (texted with Excel 2007 version).
What guage wire for a 220 volt 50 amp at 50 feet?
If you are in the US, and in a residential application, you are probably using Romex type cable (NM, or NMC). That type of cable is restricted to the 60 degree column for ampacity calculations and would require a #6 copper wire for a 50A application. At that size, a 50' length will probably not impact the voltage drop.
How do you remove key switch Ford F-350?
Disconnect the negative battery cable, using a socket. Remove the lower steering column shroud, using screwdriver. Lower the steering column by removing the three 15 mm nuts in the column support bracket on the instrument panel, using a socket. Pull the electrical plug out of the ignition switch. Remove the two bolts securing the ignition switch to the steering column, using the appropriate socket. Lift the ignition switch off the column. Hope this helps.
