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Which one of the following combinations of bend in a conduit run require the use of a pull box two 90-degree bends and four 45-degree bends two 90-degree bends and five 30-degree bends?
The electrical code states that there shall be no more than four 90 degree bends in a conduit length between pull boxes. This equals 360 degrees. The first scenario 90 + 90 + 45 + 45 + 45 + 45 = 360 degrees so that conduit run is acceptable. The second scenario 90 + 90 + 30 + 30 + 30 + 30 +30 = 330 degrees so this combination is also acceptable.
One problem when using rigid metal conduit in a residence is that installation of the conduit may?
One problem of using rigid conduit in a residency when it is not needed is that project will very quickly over run the budget of the project. Labour will be at least 5 times more expensive to install rigid over NMD90 cable.Another problem will be the tight bends required in home wiring as compared to the radius bends that rigid conduit requires.
What size conduit do you need to install a 0000 wire?
4/0 gauge wire, depending on its insulation type is rated from 230-260 amps. Assuming you are running a new power supply with the 4/0 wire, you will have a minimum or three 4/0 conductors and a ground wire for a single phase power supply and four conductors with ground for a three phase power supply. Three 4/0 wires require a minimum 2 inch conduit. Four 4/0 wires require a minimum 2 and 1/2 inch conduit. These conduit sizes I'm quoting come directly from the NEC, the National Electric Code. These sizes of conduit are determined by the basic rule that all the conductors in a conduit are not to exceed 40% of the volume of the pipe. The other 60% of air space is required for heat dissipation.
Is there a distance limit for conduit runs between junction boxes?
No, there is not a distance limit. Most prints have specified 200' and local jurisdictions may impose a limit. The largest fish tape I've ever bought was a 200' so unless I want to vacuum a 'mouse' through the pipe; I go with 200'.
Which of the following processes cause substances to move across membranes and doesent require energy ATP?
diffusion or osmosis (diffusion of water)
What combinations of bends in a conduit run require the use of a pull box?
Code states no more that 4 - 90 degree bends in a conduit run between pull boxes.
Which one of the following combinations of bend in a conduit run require the use of a pull box two 90-degree bends and four 45-degree bends two 90-degree bends and five 30-degree bends?
The electrical code states that there shall be no more than four 90 degree bends in a conduit length between pull boxes. This equals 360 degrees. The first scenario 90 + 90 + 45 + 45 + 45 + 45 = 360 degrees so that conduit run is acceptable. The second scenario 90 + 90 + 30 + 30 + 30 + 30 +30 = 330 degrees so this combination is also acceptable.
Does conduit 2 require Wii motion plus?
no its just optional whether you want to use motion plus or not
Why do they require asphalt paint om outside of rigid conduit?
Asphalt paint is applied to the outside of rigid conduit primarily for protection against corrosion and environmental damage. The paint creates a barrier that prevents moisture and chemicals from degrading the metal, extending the lifespan of the conduit. Additionally, it can provide a level of insulation and improve visibility for safety purposes. Overall, using asphalt paint enhances the durability and functionality of the conduit in outdoor installations.
One problem when using rigid metal conduit in a residence is that installation of the conduit may?
One problem of using rigid conduit in a residency when it is not needed is that project will very quickly over run the budget of the project. Labour will be at least 5 times more expensive to install rigid over NMD90 cable.Another problem will be the tight bends required in home wiring as compared to the radius bends that rigid conduit requires.
What size conduit for 200 amp service?
50 mm or 2 inch will handle the 3/0 wires for a 200 amp service.
What size conduit do you need to install a 0000 wire?
4/0 gauge wire, depending on its insulation type is rated from 230-260 amps. Assuming you are running a new power supply with the 4/0 wire, you will have a minimum or three 4/0 conductors and a ground wire for a single phase power supply and four conductors with ground for a three phase power supply. Three 4/0 wires require a minimum 2 inch conduit. Four 4/0 wires require a minimum 2 and 1/2 inch conduit. These conduit sizes I'm quoting come directly from the NEC, the National Electric Code. These sizes of conduit are determined by the basic rule that all the conductors in a conduit are not to exceed 40% of the volume of the pipe. The other 60% of air space is required for heat dissipation.
What are some current effects of the Protestant Reformation?
The most important effect is that reformers ,ie Luther and Calvin, taught that Christians have an open and direct communication with God that does not require a human conduit, (priest)
Which of the following will you require to hear music on your computer?
sound card
Which of the following are statements that require proof in a logical system?
Corollaries,TheoremsCorollaries, Theorems
Which of the following Exchange server roles require the installation of IIS?
cas and mailbox
Do 2 90 degree bends and 4 45 degree bends in conduit run require a pull box?
Yes. You have to have a pull box every 4 90s or every 100ft. Which ever comes first.
