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What is the minimum acceptable voltage on a 12 volt battery?
Fully charged should be around 12.8
Can you use a 12 volt car battery instead of 8.1.5volts dry cell batterys?
Yes, that is acceptable.
How much volt battery can be charged by an alternator?
If we are talking about cars only: the system that charges the 500 volt battery in a Hybrid is a Alternator. So in theory there is no limit. Most cars are "12 volt" (common usage, incorrect) systems.
Acceptable voltage drop for 3 phase 415 volt motor?
The voltage drop should not exceed 3% on a feeder or branch circuit.
How Convert 200 volt to 230 volt?
If a precision voltage is needed from 200 to 230 an auto transformer could be used. If the load is a 230 volt motor to be operated on 200 then add 15% to the nameplate full load amperage for the calculation for overload protection.
What are the common testing in cathodic protection?
The primary method to verify a cathodic protection (CP) system is providing adequate corrosion protection is measuring the DC pipe-to-earth or DC structure-to-electrolyte potential with respect to a stable reference electrode such as a Cu:CuSO4, Zinc, or Ag:AgCl (for sea water applications). This is a measurement that requires training and experience specifically in CP to perform properly because it is unlike most measurements taken by facility personnel. Key differences are:1. The potential is DC not AC like power electricity.2. The magnitude is less than a volt; not 115 VAC and higher like power electricity.3. The current that provides the corrosion protection flows through the soil or water and not the insulated cables of regular electrical power or signals.4. The volt meter common is connected to an electrochemical half cell in contact with the electrolyte, not the electrical ground.5. The voltage on the meter will include error due to current in the electrolyte that CP experts are trained to measure and account for in the analysis.NACE International (www.nace.org) provides a directory of people trained, qualified and certified to test CP system.To ensure the CP system is operating, it is easy to measure and record the current flow on the cable connection between the structure and anode. This is fairly easy to measure an can be performed by facility maintenance personnel.Mawhinney - Corrpro
What wire size 240 volt 21 amps 150 foot run?
A #10 copper conductor will limit the voltage drop to 3% or less when supplying 21 amps for 150 feet on a 240 volt system.
What gauge underground wire for 110 volt 15 amp 700 ft for a pond pump?
A #1 copper conductor will limit the voltage drop to 3% when supplying 15 amps for 700 feet on a 120 volt system.
Will 220 volt work in a high volt 3 phase motor?
Yes a 208 voltage motor will operate on 220 volts. You have to increase the motor overload protection by 10% of the motor's full load amperage to protect the motor.
What size aluminum wire needed for 30 amp at 240 volt for 500 feet underground?
A 1/0 aluminum conductor will limit the voltage drop to 3% or less when supplying 30 amps for 500 feet on a 240 volt system.
What size conductor is needed to carry 25 amps 120 volt AC over 400 feet?
A #4 copper conductor will limit the voltage drop to 3% or less when supplying 25 amps for 400 feet on a 120 volt system.
What is no volt protection in motor circuits?
No Volt protection is a method of motor starting that ensures personal and equipment safety by disconnecting the power from the motor in the event of a power fail. If an isolating switch only was used, following a power cut the device could start without warning, and injury or damage could occur. No Volt protection uses push button switches and contactors wired in such a way that when the power fails, the hold on relay releases and the motor will not start until the operator presses the start button. In most countries this is mandatory, In New Zealand or Austrailia, this is mandated by AS/NZS 3000
