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If an autotransformer has a full-load input current of 40 amperes what is the maximum overcurrent protection device rating allowed?
Wiki User
∙ 11y ago
Assuming 208V 1 phase, 125% of the FLA, 40X 1.25 = 50, A 50 amp 2 pole breaker would be used and would be the maximum allowed by the NEC
Wiki User
∙ 11y ago
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Does a GFCI give over-current protection?
GFCI stands for ground fault circuit interruptor. It inherently works by detecting ground current; when ground current is detected above a low threshold, the GFCI will trip. Some GFCIs also may provide phase overcurrent protection (such as the two phase wires being shorted together) as well. *************************************************************** It is a differential current detector. The line (or live, phase or hot) and the neutral wires of an a.c. supply should both be carrying the same value of current. (The current comes from the generator and goes to the load through the line and neutral wires and goes back to the generator.) If there is a difference in the in the two wires, it can only be because there is a fault which has allowed some current to flow to Earth ("ground"). As long as the two currents are equal, the interruptor stays closed. Once an imbalance is detected, the interruptor operates and disconnects the supply.
Will the supply company allow you to install a double pole isolator switch between the cut out fuse and the consumer unit and if so where can you buy one?
No, the supply company will not allow anyone to install a double pole isolator switch between the cut out fuse and the consumer unit. This is the utility company's primary voltage line. The only people that are allowed to work on their equipment is their own employees. These people are trained linemen who know and respect high voltage and know all of the safety procedures to adhere to.
How do you write a letter to electric department about your electric meter not working?
If you think there is a discrepancy in the meter reading, phone the utility company. It is there responsibility to come out and check to make sure that the readings are correct. It falls within the consumer protection act and weights and measures act that the tolerance of their measuring equipment is to be within the specified tolerances allowed by governmental departments.
What could slave not do?
They could not look a white man in the eye, they could not sleep with a white woman but it didn't matter the other way around. They was not allowed to be educated. They was not allowed to refer to themselves as human. They were not allowed to keep their children when they were ready for sale. In fact they were not allowed to do any thing that their owner didn't approve of. Many of America's grand old familys subscribed to this method of interaction with slaves.
Are recessed lights thermally protected?
Yes, all recessed lights have thermal protection, normally a bi-metal thermal overload. They must be to receive a U.L., (Underwriters Laboratories) approval sticker and be allowed to be sold in the U.S. The overload works on heat, not current, so that if you say put a 200 watt lamp into a fixture rated for 60 watt maximum, the overload will overheat and open the circuit.
REF Protection how it will operate?
REF, or restricted earth fault protection is normally applied to transformers. The idea is to set a very sensitive overcurrent on the neutral of a Wye winding. For ground faults, current will flow up the neutral, triggering this overcurrent relay to operate very quickly. To prevent this relay from tripping for faults outside "the protected zone" (such as out on a line near the transformer), information is gathered from the high, low, and sometimes tertiary windings of the transformer to determine if the fault is inside the current transformers used to gather information for protecting the transformer (can be in the transformer bushings, but is often in the breakers that operate to protect the transformer) or outside them. If inside, the overcurrent is allowed to operate. If outside, the overcurrent is restrained from operating.
No state is allowed to make laws that deprive a citizen of full what of the law?
protection and use of the law.
How do you use program that is not allowed on a computer?
take of your firewall protection
Did Theodore Roosevelts reforms benefit the nation?
yes because Roosevelt reforms allowed protection for national resources
When are proctors allowed to offer examinees a pass guarantee for the servsafe food protection manager certifcation exam?
It is never allowed
What is the data protection act concerned with?
The data protection act states that you are allowed to change your personal information at any time if it is incorrect
Are police allowed to perform protection for friends?
It may depend on what is meant by the term "perform protection for." Please re-submit the question and be more specific.
What natural protection allowed early Chinese civilization to grow?
Mountain ranges and deserts
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With the promise of military protection from the U.S., it allowed Taiwan Government to reallocate resources and spend it on economic development. The promise of U.S. military protection also allowed Taiwanese businesses to have continued faith in the government to reinvestment its capital into the island economy.
Which ships of the U.S. were also allowed to arm themselves as protection against submarines?
Merchant Ships
Which describes discrimination that is allowed under the equal protection clause?
Discrimination that is narrowly tailored to serve a compelling government interest may be allowed under the equal protection clause. This typically applies when the discrimination is necessary to achieve a specific and important government objective, such as affirmative action programs in education or employment.
Is Romex in conduit allowed?
In Canada from grade to five feet for mechanical protection.
